第二部分：英语知识运用（共两节，满分45分）
第一节 单项填空（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，并在答题卡上将该项涂黑。
21. Generally speaking,__________ good knowledge of English is regarded as __________ticket to a good job.
A. /; / B. a; a C. /; a D. a; the
22. ---- What was it that made Susan happy?
---- ________monitor of the class.
A. Being elected B. She was elected C. Because she was elected D. Her elected
23. _____we promise continuous increase in rural incomes _____improve the whole people's well-being．
A．Only if; we can B．If only; can we C．Only if; can we D．Unless; we can
