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答案：答案：對。IEEE 802委員會是電氣和電子工程師協(xié)會（IEEE）下屬的一個委員會，專門負(fù)責(zé)制定局域網(wǎng)（Local Ar...

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IEEE 802委員會制訂了局域網(wǎng)標(biāo)準(zhǔn)。
答案：答案：正確。IEEE 802委員會是電氣和電子工程師協(xié)會（IEEE）的一個標(biāo)準(zhǔn)委員會，專門負(fù)責(zé)制定局域網(wǎng)（LAN）和城域...
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Two days is not enough for him to finish the work.He needs _____ day. （2 分）A． a thirdB． otherC． the thirdD． the other
答案：答案：A 解析：本題考查的是分?jǐn)?shù)表達(dá)法。根據(jù)題意，他需要的不是另外兩天，而是第三天，因此應(yīng)該選擇表示“第三天”...
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Hi, Jane. Would you like to go to the ball this evening?- Sorry, Frank. _____ tomorrow's lessons, I have no time to go out with you.（2 分）A． Not having preparedB． Being not preparedC．
答案：答案：A 解析：選項(xiàng)A "Not having prepared" 是一個現(xiàn)在分詞的否定形式，表示"沒有準(zhǔn)備好...
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Hi, Jane. Would you like to go to the ball this evening?- Sorry, Frank. _____ tomorrow's lessons, I have no time to go out with you.
答案：答案：Preparing for完整對話：Hi, Jane. Would you like to go to the b...
問答題
Important _____ his discovery was, it was regarded as a matter of no account in his time.（2 分）A． asB． untilC． althoughD． when
答案：答案：A 解析：本題考查的是讓步狀語從句的引導(dǎo)詞。句子的結(jié)構(gòu)是"Important _____ his dis...