第二部分 英语知识运用(共两节,满分35分)
第一节 单项填空(共15小题;每小题1分,满分15分)
请认真阅读下面各题,从题中所给的A、B、C、D四个选项中,选出最佳选项,并在答题卡上将该项涂黑。
21. In 1948, three American scientists invented ______ transistor, which is ______ small electronic device to control an electric current.
A. the; a B. a; a C. the; the D. a; the
第一节 单项填空(共15小题;每小题1分,满分15分)
请认真阅读下面各题,从题中所给的A、B、C、D四个选项中,选出最佳选项,并在答题卡上将该项涂黑。
21. In 1948, three American scientists invented ______ transistor, which is ______ small electronic device to control an electric current.
A. the; a B. a; a C. the; the D. a; the