生物圈与岩石圈的关系是 [单选题] * A.
不相关 B.
生物圈包括岩石圈全部 C.
生物圈包括岩石圈的上部 D.
生物圈包括岩石圈的上面一半部分

多项选择题The disasters caused by ________ are regarded as perils of the sea. A、natural calamities B、fortuitous accidents C、external risks D、extraneous risks

单项选择题My only aim is to ____________the china at the Olympics. A、praise B、sing C、experience D、represent