book 9 unit 4 综合检测题 第二部分：英语知识运用（共两节，满分45分） 第一节： 语法和词汇知识（共15小题；每小题1分，满分15分） 从a、b、c、d四个选项中，选出可以填入空白处的最佳选项。 21. in the botanical garden we can find a(n) _______ of plants that range from tall trees to small flowers. a. species b. groups c. amount d. variety 22. this is a very special flower and it can _______ a strong sweet perfume at night. a. give in b. give up c. give out d. give out 23. if you _______ a mistake in reviewing the report, please bring it to my attention.
