2011大学四级考试单项选择题模拟训练十二

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6.On our way to Beijing, we visited Xi’an, a city of two million _______, and stayed there for two days.

0 K5 Y0 K- c3 e! j2 pA. insects B.human C.inhabitants D.flights
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' o# H. D1 U% V! o0 K6 P7.One of the main reasons for air pollution is that many cars _______ smoke into the atmosphere.

3 n7 V6 q7 g" K2 D+ A, LA.gather B.hire C.discharge D.escape
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+ N! V5 L  G0 n' J8 O& c0 P: r1 X8.Don’t forget to _______ to let us know you arrived safely.
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A.cable B.cage C.border D.bay
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9.She gave him a _______ that she could not come to his party.
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: k+ F- C& R' [" RA.mistress B.shoot C.neck D.hint
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  H1 b' p+ O/ r6 Y" p' d10.When the temperature is below zero, water will _______.

! a( u; j7 I6 c0 T# L) pA.freeze B.virtue C.sink D.seek
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* G+ B! r% L$ y, y/ V  E, Y4 D( O6.C 7.C 8.A 9.D 10.A