Many beautiful fish are fast disappearing（）the severe pollution.

In the 19th century, it was common to hear people in Europe and America say that the resources of the sea were unlimited. For example, a famous biologist said () the mid 1800s that resources of the sea were (). Today there's () that the resources of the sea are as seriously threatened as () of the land and the ai (), the threat to fish is greater () than the threat to birds and land animals because fish are a () needed food resource. Many people throughout the world () fish as an important part of their food and a reduction () the fish supply could have wide () on hunger and the population. Fishermen in the Atlantic, every year, () 20 billion pounds of fish to () food demands. But it is important to () that these practices cannot continue () the using up of the fish resources within the next few years.
Sea resources are () declining in many parts of the world and the problem cannot be (). It is only () care and planning in this generation () the food () of the sea can continue () future generations.
1、A) on B) in C) at D) by
2、A) exhaustible B) inexhaustible C) vast D) uncountable
3、A) fact B) event C) evidence D) trend
4、A) that B) those C) which D) what
5、A) Furthermore B) Regardless of C) Fortunately D) In addition to
6、A) by the way B) under way C) in some ways D) to such an extent
7、A) many B) as C) much D) such
8、A) apply B) utilize C) organize D) depend on
9、A) for B) at C) in D) on
10、A) affects B) results C) effects D) significance
11、A) get B) breed C) consume D) devise
12、A) provide B) meet C) supply D) present
13、A) refer B) represent C) recognize D) reveal
11、A) by B) for C) in D) with
15、A) rapidly B) almost C) frequently D) effectively
16、A) considered B) adapted C) ignored D) acquired
17、A) with B) under C) in D) by
18、A) in which B) by which C) in this way D) that
19、A) deposits B) supplies C) components D) blocks
20、A) with B) by C) for D) on

请帮忙给出正确答案和分析，谢谢！

Everyone knows that the favourite food of the Americans is the hamburgers.The best pla
Everyone knows that the favourite food of the Americans is the hamburgers.
The best place to buy hamburgers is a fast-food restaurant(饭馆). In these restaurants, people ask for their food, wait just a few minutes. Then when the food is ready, they take it to their tables themselves.They can eat it in the restaurant or take the food out in a plastic(塑 料 的) box and eat it at home, at work, or in a park. At some restaurants people can drive up beside a window. They ask for the food and a worker hands it to them through the window. Then they drive off and eat in their cars. Some fast-food restaurants also sell fish, chicken, sandwiches, soft drinks and so on. Fast-food restaurants are very popular because the service(服务) is fast and the food is not too dear. For many people, this is very important. In the United States, about 20% of all married(结婚的) women with children work outside the home. They are often too busy or too tired to cook dinner for the family at night. So fast-food restaurants are a great help to others.
1. The passage talks about ________.
A. Americans
B. hamburgers
C. fast-food restaurants
D. sandwiches
2. Drivers usually buy and eat their fast food ________.
A. at home
B. at work
C. in a park
D. in their cars
3. Which of the following do some fast food restaurants sell？
A. Beef, fish and eggs.
B. Sandwiches, chicken and drinks.
C. Noodles and dumplings.
D. Fish, and vegetables and meat.
4. Why are fast-food restaurants popular？
A. The service is fast and the food is cheap.
B. There are many people there.
C. People just buy the food through the window.
D. People can eat their food right there.
5. Fast-food restaurants are a great help to the married women because ________.
A. they can leave their children there
B. they can cook dinner in the restaurants
C. they can buy food for their families
D. they can find work there

请帮忙给出正确答案和分析，谢谢！

The United States is a very large country. It has many different kinds of landscapes and many different kinds of people.
In the East, the countryside is green and fresh. Here are some of the first states and some of the big cities. New York and the capital, Washington D.C., are in the East.
In the South, there is the beautiful city of New Orleans, the capital of jazz. It is sometimes hot here, and the people here are very different from those in the East.
The Central Plains of the United States are fertile with big fields of wheat and corn.
In the South-West it is often hot and dry. But the deserts and mountains are beautiful. And California, on the West coast, is famous as a “paradise” state.
The weather in the Mid-West, near the Great Lake, is often cold and windy, and there is a lot of snow in winter.
(1)、It’s well-known that the United States has many different kinds of ______. ()
A、landscapes
B、people
C、climates
D、all of the above
(2)、Some of the first states and some of the big cities are in the East, including ______. ()
A、Washington D.C.
B、New Orleans
C、California
D、Los Angeles
(3)、Big fields of wheat and corn can be found in______. ()
A、East
B、the Central Plains
C、the South-West
D、the South
(4)、New Orleans is famous for its ______. ()
A、ballet
B、country music
C、jazz
D、classic music
(5)、In the fifth paragraph, the word “paradise” means ______. ()
A、wonderful
B、clean
C、terrible
D、large

请帮忙给出正确答案和分析，谢谢！

High in the Swiss Alps many years ago, there lived a lonely shepherd （牧羊人)boy who l
High in the Swiss Alps many years ago, there lived a lonely shepherd (牧羊人)boy who longed for a friend to share his evenings.(很多年以前，在瑞士阿尔卑斯山上住着一个牧羊人，他期望能找到一个朋友在夜晚与他为伴。) One night he saw three old men, each holding a glass.
The first old man said：―Drink this liquid and you shall be victorious in battle. ‖
The second old man said：―Drink this liquid and you shall have countless riches. ‖
The last old man said：―I offer you the happiness of music-----the horn(号角).‖
The boy chose the third glass, The next day, he came upon a great horn, ten feet in length, When he put his lips to it, a beautiful melody(旋律) floated across the valley. He had found a friend.
So goes the legend(传说) of the horn. First known in the ninth century, the horn was used by herdsmen to call cattle, for its deep tones echoed across the mountainsides. Even today, on a quiet summer evening, its music can be heard floating among the peaks.
6.The passage tells us his lonely job about the shepherd boy.
A.T
B.F
7.The boy choose to drink the glass offered by the last old man because the boy was thirsty.
A.T
B.F
8.After the shepherd boy found the horn, he discovered it was like a new-found friend.
A.T
B.F
9.Today the horn is heard in the Swiss Alps when it rains.
A.T
B.F
10.The Legend of the Horn would be the best title for the passage.
A.T
B.F

荧光原位杂交(FISH)与免疫组化()的根本区别是()FISH是用来检测。

Help yourself to some fish!－－ _____________.A.You are very kindB.Thank youC.The fish sm

FISH可以用EDTA抗凝（）

多发性骨髓瘤病人如果要做FISH相关检测，浆细胞富集并不是一定要做（）

Some people are extremely （) to fish and they exclude from their diet.

Gatsby,Daisy,Nick are the characters of（）.

In a ten－year （) from 1976 to 1985, the total world fish catch increased 29%.