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【单选题】
The reason why there is no cable car to the floor of the Grand Canyon is that______.A.
it is so long a way to the floor of the Grand Canyon that it is difficult to build
B.
it is against consevation to build cable cars there
C.
it is more adventurous to travel to the floor without taking cable cars
D.
.
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举一反三
【单选题】艾萨克·牛顿的《自然哲学的数学原理》(Philosophiae naturalis principia mathematica)就是用_________写的
A.
拉丁语
B.
英语
C.
德语
D.
希腊语
【单选题】Who is the author of "Philosophiae Naturalis Principia Mathematica” which embodied laws of motion and the idea of universal gravity?
A.
Darwin
B.
Newton