人教版高中英语必修3 Unit 2 Healthy eating 同步练习2

1.

详细信息

阅读理解 There are lots of insects that farmers hate. But there also are some they like. They protect crops against damage from other insects. A good example is the lady beetle, which is also known as the ladybug(瓢虫)． Lady beetles are a natural control for aphids(蚜虫). Lady beetles are red, orange or black. They often have black spots, though some have light colored spots. Different kinds of lady beetles have different numbers of spots. There are lady beetles with four, five, seven and fourteen spots. Many of the well-known kinds of lady beetles come from Asia or Europe. They now are common throughout the United States. American scientists imported one kind of lady beetle, the multicolored Asian lady beetle, as early as 1916. They released them as an attempt to control some kinds of insects. Over the years, the beetle has become established, possibly helped by some that arrived with imported plants on ships. Experts say over 450 kinds of lady beetles are found in North America. Some are native to the area. Others have been brought from other places. Almost all are helpful to farmers. The Asian lady beetles now in the United States probably came from Japan. The Asian lady beetle eats aphids that damage crops like soybeans, fruits and berries. In the southern United States, Asian lady beetles have reduced the need for farmers to use reskilling poisons on pecan trees. This popular tree nut suffers from aphids and other pests that the lady beetles eat. But some people say the Asian lady beetle has itself become a pest. They worry that the lady beetles may eat their late autumn fruit crops. Experts say Asian lady beetles may appear in large numbers in some years. But they say the insects are too helpful to be considered as pests. （1）What do ladybugs look like? A.All kinds of ladybugs are of the same color. B.Most of them are red, orange or black. C.They each have the same number of spots on them. D.Most of them have fourteen spots. （2）Asian ladybugs have been in the United States for______. A.nine decades B.hundreds of years C.half a century D.a century （3）According to the passage the following statements are supported EXCEPT________. A.there are more than 450 kinds of ladybugs in North America, including native ones B.only some imported ladybugs are helpful to the local plants C.soybeans, fruits and berries are favorites of aphids. D.pecan trees are common in the south of America （4）According to the experts, ladybugs are________. A.more helpful than considered as pets B.more pests than helpful insects C.helpful as well as destructive D.are more destructive than helpful

2.

详细信息

阅读理解。 When you are travelling in Thailand, which means of transport is the best choice? You can rent a variety of motorbikes or bikes in Thailand. It seems to be very popular in most of the beaches and islands along the places in the north. The most popular bikes are the little 125 cc Honda Dream which you can get for about 150 baht (铢) a day or as little as 3,000 baht per month, making it the cheapest way to tour Thailand for the people from other countries. Sometimes you will have to go somewhere by taxi. When you are in cities in Thailand, especially in Bangkok, always remember to get a taxi that is traveling on the roads. Some drivers outside hotels refuse to use the meter (计程表). They will ask a price which is several times the price when they use the meter! The quality of the roads in Thailand is generally pretty good, so renting cars is another way to get around. The big car rental companies may offer you slightly older cars at a very reasonable (合理的) price. It is a little surprising considering that the cost of buying a car in Thailand is more than that in the West. Petrol is also reasonably priced in Thailand, more expensive than American prices, but much cheaper than what is paid in Europe. In the past, Bangkok could be a difficult place to drive in?signs were generally in Thai only, making it a hard job to find exactly where you were by looking around. But now, the situation is improved. In a lot of places, even the farthest corners of the country, street signs are in both Thai and English. （1）To a foreigner, the most economical way to get around Thailand is renting a ________. A.motorbike B.car C.taxi D.bike （2）What is the writer's advice about taking a taxi in Thailand? A.To make sure there is a meter in it. B.To take a taxi parked outside hotels. C.To take a taxi going on the road. D.To bargain with the driver over the price. （3）It was difficult to drive in Bangkok in the past because ________. A.there were too many traffic jams on the roads B.the signs were written only in their own language C.there were no signs at the farthest corners D.the quality of the roads was not good

3.	详细信息
If you don't pay the d   , we shall have to put the matter in the hands of our lawyers.

4.	详细信息
They didn't fight, but stood there g    at one another.

5.	详细信息
I don't feel that school has the right to put cameras inside the children's home and s    on them.

6.	详细信息
There are a very l    number of available seats, so be sure to book your seat as soon as possible.

7.	详细信息
David earns his l    by writing articles for newspapers.

8.	详细信息
Wang Peng stopped worrying and started advertising the     (好处) of his food.

9.	详细信息
To succeed, we must     (结合) talent with working hard.

10.	详细信息
He has been working for a long time, but he is still full of     (能量).

11.	详细信息
You should do some     (研究) before making the final decision.

12.	详细信息
She is not     (苗条的) enough to wear these tight trousers.

13.	详细信息
If we want to lose weight, we must go on a diet. →We must have a         to keep healthy.

14.	详细信息
The blind man made a living by begging on the roadside. →The blind man             by begging on the roadside.