【单选题】According to paragraph 3, the heat flow necessary for the production of geothermal energy
A.
is like solar heat on the Earth's surface
B.
happens near tectonic plate boundaries
C.
must always be artificially increased
D.
may be impractical because of its location Paragraph 3 is marked with an arrow [→].
【单选题】在现代社会中,( )早已成为推动整个经济社会发展的最重要动力。
【单选题】The word 'unwarranted'(line 3, para. 2)most probably means '______'.
【简答题】It’s necessary to 3) _______________.
【单选题】The last sentence in Paragraph 3, 'this is certainly not a necessary association', is quite possibly an opinion by ______ .
A.
a man of the classic mode
B.
a man of the romantic mode
C.
a woman of the romantic mode
D.
the author making a light digression
【单选题】自行车的前轴为一不转动的心轴,该轴主要承受弯矩。该轴承受弯矩段的应力属于( )
【单选题】Passage 3 Questions 11 to 15 are based on the following passage: The vitamins necessary for a healthy body are normally supplied by a good mixed diet (饮食) , including a variety of fruits and green veg...
A.
normally contains enough vitamins
B.
still needs special provision of vitamins
C.
is suitable for losing weight
D.
is composed of fruits and vegetables
【单选题】Passage 3 Questions 11 to 15 are based on the following passage: The vitamins necessary for a healthy body are normally supplied by a good mixed diet (饮食) , including a variety of fruits and green veg...
A.
normally contains enough vitamins
B.
still needs special provision of vitamins
C.
is suitable for losing weight
D.
is composed of fruits and vegetables
【单选题】现代社会中,( )早已成为推动整个经济社会发展的最重要动力。