多项选择题

下列属于金属龙骨组成的是（）。
A、吊筋
B、横撑龙骨
C、主龙骨
D、次龙骨

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单项选择题

Please Listen to the following TED talk and answer the questions followed.
(8分-8分29秒）
To argue against the claim that the Sun is the main cause of climate change held by climate change deniers, the speaker argues the followings EXCEPT

A．The measured energy imbalance occurred during the deepest solar minimum in the record, when the Sun's energy reaching Earth was least
B．Yet, there was more energy coming in than going out
C．This shows that the effect of the Sun's variations on climate is overwhelmed by the increasing greenhouse gasses, mainly from burning fossil fuels
D．The deep ocean is also gaining heat at a smaller rate, and energy is going into the net melting of ice all around the planet

单项选择题

A、
B、
C、
D、