Questions 19 to 22 are based on the passages you have just heard.
A. It was difficult to collect.
B. It was difficult to get rid of.
C. It came in a variety of forms.
D. It tended to be absorbed by physical objects.
查看答案
Questions 19 to 22 are based on the passages you have just heard.
A. Body heat.
Body heat and conventional fuel.
C. Heat from human bodies and other heat-emitting objects.
D. Heat from human bodies, other heat-emitting objects, and conventional fuel.
Questions 19 to 22 are based on the passages you have just heard.
A. Two.
B. Four.
C. Six.
D. Eight.
Questions 19 to 22 are based on the passages you have just heard.
A thin female who does not study.
B. A fat female who studies hard.
C. A thin male who does not study.
D. A fat male who studies hard.
Questions 23 to 25 are based on the passages you have just heard.
A. Fantasy fiction.
B. Horror fiction.
C. Speculative fiction.
D. Exploring fiction.
微信支付 
支付宝支付