There is a cigarette on the dressing table. (写出复数句)There are ______ on the dressing table.
A. a cigarette
B. some cigarettes
C. any cigarettes
D. cigarettes
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There are some pictures in the room. (就画线部分提问) ______ in the room?
A. What are there
B. What are
C. What is
D. What
Give those ______ these ice creams.
A. children
B. child
C. childs
D. childron
在矿物消光时,由试板孔插入云母试板时,视域中( )
A. 仍保持消光
B. 呈现消色
C. 呈现紫红干涉色
D. 呈现灰白干涉色
在正交镜下观察橄榄岩薄片时,发现同一薄片内有很多不同的白云母颗粒,它们( )
A. 光性不同,干涉色不同
B. 光性相同,干涉色不同
C. 光性不同,干涉色相同
D. 光性相同,干涉色相同