The following are endangered species EXCEPT
A. tigers.
B. whales.
C. polar bears.
D. some types of butterflies.
查看答案
牟宗三被誉为中国现代哲学思想史上的“东方诗哲”。()
参考答案：错误
平面四杆机构有无急回特性取决于极位夹角是否大于零。 ()
Which of the following is INCORRECT？
A. The U.S. has wide plains of lakes and rivers of different sizes.
B. The U.S. has thousands of lakes and rivers of different sizes.
C. The U.S. has hot deserts and cool forests.
D. The U.S. has a coastline several hundred miles long.
“五四运动”中的“德先生和赛先生”分别指的是“民主和科学”。()
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