单词拼写（共10小题，每小题1分，满分10分）

小题1:He c_________ that we should come back before 9 o’clock.

小题2: An e___________ is a kind of machine for raising and lowering something.

小题3:If you want to read quickly and well, you should enlarge your v__________.

小题4:People aged from 13 to 19 are called t__________.

小题5: His friend has _________(遭受) from lung cancer for some years.

小题6:They carried out a s_________ of experiments to test the new drug.

小题7:The mother________(使平静) the little boy by telling him a story.

小题8:I’m rather _________(挂念的) about your health.

小题9:He made a long j_________ from Beijing to London.

小题10: The doctor p___________ him to give up smoking finally.

塑化剂，又名增塑剂，是工业上被广泛使用的髙分子材料添加剂。其结构式如右图。

下列有关塑化剂的说法中正确的是

A．其分子式为

B．含极性键，易溶于水,其水溶液有丁达尔效应

C． Imol该物质最多能与3mol NaOH反应

D．可以发生加成、取代、氧化、酯化反应