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3.  What did she think of the play?

  She said she _______

A.    had never seen a better one   B. had never seen so better one

C.  has never seen a so good one  D. has never seen such a good one

試題詳情

2.  The final examination is coming up soon, it is time for us to ______  our studies.

  A. get down to  B. get out  C. get back for  D. get over

試題詳情

第一節(jié):?jiǎn)雾?xiàng)填空(共20小題;每小題0.5分,滿(mǎn)分10分)

從A、B、C、D四個(gè)選項(xiàng)中,選出可以填入空白處的最佳選項(xiàng),并在答題紙上將該選項(xiàng)標(biāo)號(hào)涂黑。

1.    Iraq has _____ too many wars, making people _______ a lot.

A. got through ,  pay       B. looked through ,  face

C. gone through  suffer      D. passed through  destroy

試題詳情

15.設(shè)復(fù)數(shù)滿(mǎn)足,且在復(fù)平面上對(duì)應(yīng)的點(diǎn)在第二、四象限的角平分線(xiàn)上,,求的值.

解:設(shè)

,.  

在復(fù)平面上對(duì)應(yīng)的點(diǎn)在第二、四象限的角平分線(xiàn)上,

它的實(shí)部與虛部互為相反數(shù),

,即

代入,得,

當(dāng)時(shí),

,,即

解得;

當(dāng)時(shí),

,同理可解得

試題詳情

14.設(shè)為共軛復(fù)數(shù),且,求

解:設(shè),則

由條件得,

,

由復(fù)數(shù)相等的充要條件,得

解得

試題詳情

13.證明:在復(fù)數(shù)范圍內(nèi),方程(為虛數(shù)單位)無(wú)解.

證明:原方程化簡(jiǎn)為

設(shè),代入上述方程得

代入,得

,

方程無(wú)實(shí)數(shù)解,原方程在復(fù)數(shù)范圍內(nèi)無(wú)解.

試題詳情

12.已知復(fù)數(shù)滿(mǎn)足,且是純虛數(shù),則復(fù)數(shù)的值為  

答案:0或

試題詳情

11.設(shè),若對(duì)應(yīng)的點(diǎn)在直線(xiàn)上,則的值是  

答案:

試題詳情

10.已知復(fù)數(shù),,則的最大值與最小值之和為  

答案:

試題詳情

9.已知,則復(fù)數(shù),對(duì)應(yīng)點(diǎn)的軌跡是  

答案:以為圓心,以2為半徑的圓

試題詳情


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