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【判断题】
网络蠕虫程序通常是指伪装成合法软件的非感染型病毒，但它不进行自我复制。（）A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
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皮皮学刷刷变学霸
举一反三
【单选题】We regret ______ to accept your terms of payment and therefore have to return the order to you.
A.
cannot
B.
being unable
C.
not able
D.
not be able
【单选题】We have avoided () our prices for as long as possible, but we can no longer prolong the inevitable。
A.
to rise
B.
to raise
C.
rising
D.
raising
【单选题】图 10-15 中 A 、 B 、 C 三点都在匀强电场中,已知 AC ⊥ BC ,∠ ABC = 60 °, BC = 20cm .把一个电量 q = 10 -5 C 的正电荷从 A 移到 B ,电场力做功为零;从 B 移到 C ,电场力做功为 -1.73 × 10 -3 J ,则该匀强电场的场强大小和方向是 [ ]
A.
865V ／ m ，垂直 AC 向左
B.
865V ／ m ，垂直 AC 向右
C.
1000V ／ m ，垂直 AB 斜向上
D.
1000V ／ m ，垂直 AB 斜向下
【简答题】We have received your letter of 15th July, informing us that the sewing machines we shipped to you arrived ______ a damaged condition ______ account of imperfectness of our packing.
【简答题】We have received your offer Oil June 20th，2009. We regret that we cannot accept it because of the terms of delivery. We made it clear in our letter that the 500 pairs of shoes should arrive here by Ju...
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