问题 选择题

图1和图2分别为花生和桃的果实图,以下关于二者的说法正确的是(  )

A.花生叶的叶脉是网状脉,桃树的叶脉为平行脉

B.我们通常对二者的食用部分都是由子房壁发育而来的

C.图中①和C、②和D在结构层次上都属于植物的器官

D.二者的种子都由果皮包被着,所以都是被子植物

答案

A、花生和桃子都属于双子叶植物,都是网状脉,直根系.A错误;

B、我们吃的是花生的②种子部分,是由胚珠发育而来的;桃子的C部分果皮,是由子房壁发育来的.B错误;

C、植物体有根、茎、叶、花、果实和种子六种器官,因此说①和C果皮是器官是错误的.C错误;

D、花生的②种子和桃子的D种子分别是由①和C果皮包被着,都属于被子植物.D正确.

故选:D.

阅读理解

阅读短文,选择正确答案。

      Have you ever stayed in a hotel? Most Chinese hotels often provide guests with things like disposable

(一次性的) toothbrushes, toothpaste, shampoo and slippers. Many guests like the idea because they don't have

to bring their own. But, if you travel to Beijing, remember to bring your own things. Starting from June, some

hotels in Beijing will no longer provide guests with these disposables. They want to ask people to use less

disposable things.

      Many disposable things are made of plastic. People throw them away after only using them once. It is a

waste of natural resources and is very bad for the environment. Do you know, one Chinese person makes as

much as 400kg of waste a year! Most of that waste comes from disposable things. In Beijing, people throw

away about 19,000 tons of plastic bags and 1,320 tons of plastic lunch bowls every year! Plastic can take

between 100 and 400 years to break down. So the less plastic we throw out, the better. So, wherever you travel,

bring your own things and use them again and again.

      Back at home and school, you can also do something to make our world a better place. Try to do these

things in your daily life: Use cloth shopping bags, not plastic ones. After using a plastic bag, wash it out and let

it dry. Then you can use it over and over again. Do not use paper cups. At your school canteen (食堂), use your

own bowl and chopsticks instead of disposable ones.

1. Why do many hotels provide guests with some disposable things? [ ]

A. Let their guests be convenient during their travelling.

B. Hope their guests use less disposable things.

C. Wish their guests to save money.

D. Want their guests to use more disposable things.

2. Some Beijing hotels will no longer provide guests with            . [ ]

A. cheap food and drink

B. disposable things

C. good service

D. free TV programmes

3. Which of the following is NOT true? [ ]

A. Many disposable things are made of plastic.

B. Throwing disposable things away is a waste of natural resources.

C. Plastic is very bad for the environment.

D. Plastic breaks down easily.

4. What can we do to make our world a better place at home and school? [ ]

A. Use shopping bags made of plastic.

B. Do not throw away paper cups.

C. Use disposable plates, bowls and chopsticks.

D. Do not forget to reuse daily necessities.

5. We can tell from the story that            . [ ]

A. people don't like disposable things at all

B. we can't use paper or plastic bowls at school

C. we should use less plastic things and protect our environment

D. hotels won't provide disposable things because they want to save money

单项选择题 A1/A2型题