词汇。根据所给首字母填出所缺单词。

1. I can see a v _____ tape on the desk.

2. Li Gang likes m _____ , but he doesn't music.

3. The p_____  is very good. I also want to buy one.

4. This r _____  is very big, but that one is very small.

5. I  n_____ a pen, two pencils and some books.

对农作物进行合理密植主要是为了

A．提高作物对水分的吸收

B．提高作物对土壤中肥料的利用率

C．提高作物的蒸腾作用

D．提高作物的光合作用效率