第Ⅱ卷（共35分）

第四部分写作（共三节，满分35分）

第一节单词拼写（共5小题，每题1分，满分5分）

根据所给的第一字母或中文拼写单词。

76. She was a _________ (安慰) to her old father.

77. Smith is very ________(吝啬的). He never helps the poor, though he is rich.

78. New Zealand has a p________ of about 3.8 million people.

79. We’ve got to be _______(实际的) and buy only what we can afford.

80. China’s role in keeping the world’s peace is highly v______.

根据探针来源和性质的不同，分子探针可分为()

A.DNA探针

B.cDNA探针

C.RNA探针

D.寡核苷酸探针

E.蛋白质探针