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【简答题】
最1的动物是非洲象，体重达5.图5吨，5.图5读作______．
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举一反三
【单选题】In the author's opinion, the absorption of immigrants into American society is ______ .
A.
rewarding
B.
successful
C.
fruitless
D.
harmful
【单选题】In the last paragraph, the author tells us the section on jokes and cartoons is ______.
A.
read only by children
B.
of no value
C.
not helpful
D.
read by many
【多选题】计算图示齿轮-连杆组合机构的自由度。当构件H为原动件时，该机构的运动是否确定？若存在复合铰链、局部自由度和虚约束，应指明。试指出下列哪些分析结果是正确的（ ）【图片】
A.
机构中无局部自由度和虚约束
B.
机构中无复合铰链，则 F = 3×5 – 2×5– 1 = 4
C.
机构中有复合铰链，则 F = 3×5 – 2×6– 1 = 2
D.
该机构的运动确定
E.
该机构的运动不确定
【单选题】The author implies that while speaking R.DLaing ________.
A.
was both too casual and authentic
B.
was acting like a performer
C.
was keeping a good balance
D.
was aware of his audience
【单选题】In the first paragraph, the author implies that writers' reactions to the development of railroads were ______.
A.
highly enthusiastic
B.
both positive and negative
C.
unchanging
D.
disinterested
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