______ from the top of the hill, the lake is just like a mirror.
A. Seeing
B. Having seen
C. To see
D. Seen
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The traveler said to himself, "I can't stand this any longer" means" ______."
A. I can't bear any longer
B. I can't stay hungry any longer
C. I can't keep my feet on this place any longer
D. I must sit down for a while
Which of the following statements is not true
A. Robots will be less expensive than they are now.
B. They will be used as aides for the disabled.
C. They will all be gentle and kind.
D. They will deal with intruders.
施工单位未对建筑材料、建筑构配件、设备和商品混凝土进行检验，责令改正，处 ( )的罚款。
A. 2万元以上20万元以下
B. 10万元以上30万元以下
C. 5万元以上10万元以下
D. 10万元以上20万元以下
根据《安全生产法》的规定，矿山建设项目和用于生产、储存危险物品的建设项目竣工投入生产或者使用前，( )依照有关法律、行政法规的规定对安全设施进行验收。
A. 可以
B. 必需
C. 不须
D. 必须
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