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更新 2022-09-03
科目英语
题型单选题
难度中等
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______ on ten years of observation and study, the theory shows that every one dreams every night, whether they realized it or not.

A．Basing

B．Based

C．Being based

D．Having based

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语音知识（共5小题；每小题1分，满分5分）
从A、B、C、D四个选项中，找出划线部分与所给单词划线部分读音相同的选项。
1．solution
A. gun                B. hunt             C. equal            D. typhoon
2. stomachs
A. character      B. sandwich         C. bench            D. known
3. bow
A. flow         B. fellow               C. cow          D. tomorrow
4. theory
A. diary            B. pioneer          C. therefore        D. really
5. exchange
A. expression      B. exist             C. examine      D. exercise

题型：未知
难度：未知

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In the past month, cruel snowstorms hit some European countries and America , _________great transportation problems in these countries.

A．causing

B．caused

C．to cause

D．having caused

题型：未知
难度：未知

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With Halloween approaching, there exists a real concern among parents and teachers __________ trick or treating will become a seriously anti-social activity.

A．whether

B．what

C．that

D．how

题型：未知
难度：未知

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When first __________ to the market, the computer software was not a success due to its complexity in operation.

A．introducing	B．being introduced
C．introduced	D．to be introduced

题型：未知
难度：未知

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Unfortunately, the element Madam Curie devoted all her life her death .

A．to caused

B．causing

C．to be caused

D．to causing

题型：未知
难度：未知

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