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【单选题】
The reason why the hero “J.B.” has a guilt complex is because that___________.A.
he has murdered one of his friends when he is a child
B.
he has witnessed a murder when he is a child
C.
he has accidentally knocked his brother onto sharp pointed railings, killing him
D.
he has accidentally knocked his brother off the cliff while they were skiing
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【单选题】They went for a long walk _____ they were feeling very tired.
A.
although
B.
because
C.
however
D.
despite
【简答题】阅读，并判断正误。 One day, two young men went to a small city. They stayed outside a shop for a long time, and they seemed to have nothing to do. The owner of the shop felt they were unusual. So he used his n...
【简答题】硅酸盐水泥又分为两种类型:____的称I型硅酸盐水泥,代号为P · I。掺加不超过水泥质量____的石灰石或粒化高炉矿渣混合材料的为II型硅酸盐水泥,代号为P · II。
【简答题】One day, two young men went to a small city. They stayed outside a shop for a long time, and they seemed to have nothing to do. The owner of the shop felt they were unusual. So he used his new mobile ...
【简答题】硅酸盐水泥中MgO含量不得超过( )。如果水泥经蒸压安定性试验合格,则允许放宽到( )。SO3的含量不超过( );硅酸盐水泥中的不溶物含量,I型硅酸盐水泥不超过( ),II型硅酸盐水泥不超过( )。
【简答题】II型硅酸盐水泥的代号:____,普通硅酸盐水泥的代号:____。
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