[单选题]听第8材料，回答 10～12 题。第10题：How long has the man been in London?

正确答案 ：B

A few years.

[单选题]Why was the woman at the airport? （ ）

正确答案 ：B

She was seeing the man off．

[单选题]CPlants can’t communicate by moving or making sounds, as most animals do. Instead, plants produce volatile compounds, chemicals that easily change from a liquid to a gas. A flower’s sweet smell, for example, comes from volatile compounds that the plant produces to attract insects such as bugs and bees.

正确答案 ：I

producing some chemicals D． sending out electronic signals

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