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问题 选择题

中国古代思想家早就提出了人与自然和谐相处的见解。主张“不要过分捕捞鱼鳖，要按时令进山伐树”的古代思想家是[ ]

A、孔子

B、孟子

C、墨子

D、韩非子

答案

答案：B

完形填空

Betty：Hi, Mum!

Mum: Hello, Betty! Where are you now?

Betty: I’m小题1:_______________ (stand) on the Great Wall of China and小题2:_____________ (talk) to you.

Mum: Really? That’s great.

Betty: We’re on a school trip.

Mum: What about the小题3:_________________ (other)? Are they with you?

Betty: Well, right now Tony is小题4:_______________ (eat) a delicious ice cream. Wang Hui is (75) ________________ (take) lots of photos. Lingling is小题5:______________ (buy) a few presents and postcards. They’re on sale at the shop. Darming is小题6:_______________ (have) lunch and小题7:________________ (lie) in the sun.

Mum: I’d like a postcard too, but please take some photos of the Great Wall and send小题8:______________ (they) to me by email.

Betty: OK. We’re小题9:______________ (enjoy) the school trip a lot. Anyway, it’s time to go back to school now. Bye, Mum!

Mum: Bye, Betty!
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问答题

彗星吸引紫外线后产生了化学反应并释放出氢，氢脱离彗星的引力，产生了一个氢包层。由于大气的吸收，这个包层在地球上是无法看到的，但它能被探测器发现。由于彗头中物质的大小和质量不一致，在太阳射线冲击力和太阳风的作用下，慧头中物质被吹离时的速度也不一致。
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