【单选题】下极限尺寸减去其公称尺寸所得的代数差为 。
【单选题】No matter how bright a talker you are, there are times when it’s better ______ silent.
【单选题】Why is the book Silent Spring important to America' s environmental protection?
A.
It describes a silent spring.
B.
It topped the book sales lists.
C.
It changed how American thought about nature.
D.
It includes all Carson's research achievements.
【单选题】The phrase "Silent scorn" in "Anyone trying to finish his sentence for him feels the silent scorn of that imperturbably flicking finger" implies
A.
Hawking is silent to those who wants to help him.
B.
Hawking is very cynicic.
C.
Hawking does not want to rely on others to handle daily communications.
D.
Hawking is very hard working in handling daily communications.
【单选题】The phrase 'the silent revolution'(Line 6, Paragraph 4)implies that population aging will
B.
take the world by surprise.
C.
make the world different.
【单选题】It's the media's responsibility to help those who are kept silent by their humble social positions to ___________ their wishes.
【单选题】The doctor came out of the patient's room with a ______ look on his face.
【单选题】The phrase 'the silent revolution' (Para. 4) implies that population aging will _____.
B.
take the world by surprise
C.
make the world different