合金钢是为了改善钢的性能,在冶炼时根据需要加入一些()。
A.铜
B.镍
C.塑性物质
D.合金元素的钢
参考答案:D
句型转换。
1. What's the matter with you?(改为同义句)
_______ _______with you?
_______ your_______?
2. Let's go to Li I.e i 's house to play computer games. (改为同义句)
_______ not _______ to Li Lei's house to play computer games?
_______we _______ to Li Lei's house to play computer games?
_______ _______ going to Li Lei's house to play computer games?
3. —I'm dizzy (头晕目眩的).
—You should lie down and rest. (改为同义句)
—I'm dizzy (头晕目眩的).
—You should lie down and _______ _______ _______.
阿姆斯特丹港位于荷兰西部沿海的()上,距运河出海口艾默伊登()约10nmile。有艾默伊登港的船闸与北海沟通,是荷兰的最大城市和第二大海港,也是世界上第一()大港。