1．(安徽3)下列曲線中離心率為
的是
(A)
(B)
(C)
(D)
答案：B 解析：由
得
，選B
90. To tell the truth, with so many people helping you, you needn’t worry/ you don't need to worry/ there is no need for you to worry.
89. It is a scientist that I want to be when I grow up.
88. Many young people feel/ think it (is) more and more difficult to find a good job.
87. Now/ Nowadays, the Internet is playing an important part/role in people’s life.
86. I couldn't/ can’t help laughing at his way of talking.
85. is/was admitted
82. being taken/having been taken 83. had expected 84. leaving
79. have lived/ have been living 80. to have been killed 81. heard
76. is being painted 77. will/is going to attract 78. tastes
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