金属切削机床型号的首位字母“y”表示该机床是()。
A.水压机
B.齿轮加工机床
C.压力机
D.螺纹加工机床
第1题
A.accept
B.dislike
C.disagree
D.hate
第2题
It is implied in the passage that______.
A.a great evolutionary process took place in the Galapagos Islands
B.only species that are endemic survive in the Galapagos Islands today
C.conditions of life in the Galapagos Islands differed from those in the animals' original homes
D.the plant life of the Galapagos Islands is endemic
第3题
Life was slow to settle upon the Galapagos Islands because the______.
A.land cooled slowly
B.islands were far from other islands
C.islands were very small
D.both A and B
第5题
A.interested
B. unhappy
C. curious
D. peaceful
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