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【简答题】
写出下列命题的否命题，并判断原命题及否命题的真假： （1）如果一个三角形的三条边都相等，那么这个三角形的三个角都相等； （2）矩形的对角线互相平分且相等； （3）相似三角形一定是全等三角形.
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【单选题】Mr. John is one of those men who appears to be friendly, however, it is very hard to deal with him.(改错题)
A.
appears
B.
friendly
C.
however
D.
to deal with
【简答题】John Smith is working hard to make his dream a _____(real).
【单选题】John: Is there a chance that Nick is not guilty?
A.
Is it possible that Nick is not guilty?
B.
Is it true that Nick is not guilty?
C.
Do you think Nick is guilty?
【单选题】John is working hard to promote his new book. He hopes a lot of people will buy it online.
A.
write
B.
market
【简答题】年代地层单位
【简答题】预防新生儿脓漏眼,可用(__)滴眼;
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