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switch和instant
高考频度：★★★☆☆
★☆☆☆
难易程度：★
1.（2017·江苏）A quick review of successes and failures at the end of year will help
_______ your year ahead.
A. shape B. switch
sharpen
【参考答案】A
C. stretch D.
2. We are tired of the boring topic. Why not _____ it to an interesting one?
A. deliver B. switch C. connect D. direct
【参考答案】B
【试题解析】考查动词。句意：我们讨厌这个令人厌烦 的主题，为何不换一个有趣的呢？
switch...to... “把……换……”。
【归纳拓展】
switch
n．
[C]开关；转换
vt.& vi.
(使)转换
switch off 切断(电流、气体等)
switch on 打开(开关)；接通(电流等)
switch to 切换到；转到；转变成
switch from to 从……改为，从……从转换到
switch over 改用；换用
switch sth. with sb. 和某人交换某物
switch sth. from sth. 从某物转变到某物
3. When the teacher asked him a question, he didn’t hesitate to answer it ___________.
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