我国根据人口国情，启动“单独二孩”政策，即一方是独生子女的夫妇可生育两个孩子。启动这一政策（    ）

①表明我国不再实行计划生育             ②表明我国人口数量减少，文化素质提高

③有利于社会和谐稳定发展                 ④有利于促进人口与经济社会协调发展

W: Good morning, Jack！Can I help you?

M: Good morning! I'd like____noodles.

W: What kind of noodles would you like?

M: I'd like ____potato and cabbage noodles, please.

W: What size ____of noodles would you like?

M: I'd like a ____one.

W: OK. What other things do you want?

M: Oh, yes. I'd like ten mutton and carrot ____.

W: OK.

A装置是用来研究____的实验；

B装置是用来研究____的实验；

C装置是用来研究____的实验；

D装置是用来研究____的实验。

    Scientists say life will be very different in 2050.

    First，there will be no TV channels（频道）in 2050.People will choose a program from a computer and watch it on TV.In 2050，we will get information from the computers only.

    Second，water will be a big problem in 2050.In many places，people won't have water to drink.

    Third，cars will use new and clean fuels and they will go very fast.There will be a computer in every car.And the computers will control the cars and there won't be any accidents（事故）.