国开题库

国开题库

___ is inappropriate to climb trees, pick flowers, or damage plants in city parks.

#A.This#B.It#C.What
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___ I understand what you say, I can’t agree with you.

#A.While#B.When#C.As#D.If
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___ I have ten vacation days, am I allowed to use them all at once?"

#A.When#B.As#C.If
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___ from the top of the mountain, the whole city looks beautiful.

#A.Seen#B.Seeing#C.See#D.Looked
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___ face-to-face interviews, questionnaires are cheaper for collecting data from a large number of respondents.

#A.Compared to#B.Comparing#C.Compare
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___ an interesting job in your forties may reduce your risk of getting dementia in old age, a study has suggested.

#A.Have#B.Having#C.Had
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__ you involved in the matter?

#A.Have#B.Are#C.Do
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__ tried to take action to stop it.

#A.The authority#B.The authorities#C.Authorities
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^一挡土墙高4m，墙背竖直、光滑，墙后填土面水平，填土为均质，c=10kPa，φ=20^o，K=0.66，γ=17kN/m^3，若挡土墙没有位移，则作用在墙上土压力合力及其作用点位置为（）

#A.h=1.33m E=89. 76kN/m#B.h=1.33m E=52.64kN/m#C.h=1.33m E=80. 64kN/m#D.h=2. 67m E=52. 64kN/m
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^大城市的人口规模是

#A.100万人以上#B.50万~100万人#C.20万~50万人#D.10万~20万人
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