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【简答题】
现代科学的发展表明,科学认识活动始于___________(观察/问题)。科学问题很多,来源丰富,但科研选题必须遵循一定的原则,其中首要原则是______(科学性原则/创造性原则)。科学性原则要求选题必_________(具有创新性/以科学理论和事实为依据)。提出科学问题并不只是提出一个疑难问题,还应预设解决问题______(应答域/科学依据)。科学问题有着丰富的来源,著名的“罗素悖论”体现的是科学理论的______(不相容/ 不自洽)问题。
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【单选题】What does the author imply by saying '…is far less abstract in Hawaii than in other places' (Line 2, Para. 4)?
A.
Hawaii is much safer than other places.
B.
Hawaii is not frightened by extinction.
C.
Hawaii has tried its best to reserve the land.
D.
Hawaii has gone through much extinction.
【单选题】Mauna Kea in Hawaii: Astronomy on the World's Highest Island Mountain Four thousand years ago, a volcano exploded in a far away area of the Pacific Ocean. Today, the Mauna Kea volcano is inactive. It ...
A.
Y
B.
N
C.
NG
【简答题】What did people do to protect themselves against the tsunami in Hawaii?
【简答题】在题图 2.2 所示电路中,已知 U S =6V , I S =2A , R 1 =3 Ω, R 2 =6 Ω, R 3 =5 Ω, R 4 =7 Ω。试用电压源与电流源等效变换法计算电阻 R 4 中的电流 I 4。
【单选题】According to the video, what was one of the main feature of the Rockefeller Hotel in Hawaii?
A.
It si one of the oldest hotels.
B.
It is the most beautiful hotel.
C.
It is eco-friendly hotel.
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