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【单选题】
What determines the shape of snowflakes?A.
The shape of dust particles in the air.
B.
The relative humidity.
C.
The temperature of the air.
D.
The geography of the area.
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举一反三
【单选题】Tommy’s parents looked _______ when they saw his excellent exam results.
A.
happy
B.
happier
C.
happiness
D.
unhappy
【单选题】下面两个句子中的“朝”和“稽”的读音正确的一组是() 1余姑翦灭此而朝食2韩厥执絷马前,再拜稽首
A.
① ch á o ② qǐ
B.
① zh āo ② qǐ
C.
① ch á o ② jí
D.
① zh āo ② jí
【单选题】Tom＿＿＿＿＿＿＿show his exam results to his parents.
A.
dare not
B.
dared
C.
dare to
D.
dares not to
【单选题】At the ______ exam results, his mother got ______ with him. [ ]
A.
discouraging; discouraging
B.
discouraged; discouraging
C.
discouraging; discouraged
D.
discouraged; discouraged
【单选题】Steven’s exam results put him ________ the top ten students in his grade.
A.
among
B.
between
C.
in
D.
at
【单选题】John ______ he could improve his exam results, but he did not have enough time to study.
A.
knows how
B.
knows that
C.
knew how
D.
knew that
【单选题】John ______ be could improve his exam results, but he did not have enough time to study.
A.
knows how
B.
knows that
C.
knew how
D.
knew that
【单选题】精密水准测量时,要求尽量使前后视距相等,是为了( )误差对测量的影响。
A.
消除或减弱水准管轴不垂直于仪器旋转轴
B.
消除或减弱仪器升沉
C.
消除或减弱仪器水准管轴不平行于视准轴
D.
消除或减弱标尺分划
【单选题】在进行精密水准测量时,会受到各种误差的影响。为了减弱( )对观测高差的影响,应使前、后视距尽量相等 ,并使视线离地面有足够的高度。
A.
大气垂直折光的影响
B.
仪器和水准标尺垂直位移的影响
C.
温度变化对 i角误差的影响
D.
i角误差的影响
相关题目：
【单选题】Tom＿＿＿＿＿＿＿show his exam results to his parents.
A.
dare not
B.
dared
C.
dare to
D.
dares not to
参考解析：
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