题目内容

Oncogenes are cancer-causing genes______.

A. that are always in operation in a healthy person
B. which remain unharmful so long as they are not activated
C. that can be driven out of normal cells
D. which normal cells can"t turn off

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灾难性事件的共同特点是能够对人民群众的生命、健康和财产造成伤害。()

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Thanks to computers, in the future people______.

A. will improve international understanding
B. will have no traffic jam
C. will avoid catching a bad cold
D. will not need book-keepers and accountants

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Oncogenes are cancer-causing genes______.

A. that are always in operation in a healthy person B. which remain unharmful so long as they are not activated C. that can be driven out of normal cells D. which normal cells can"t turn off

灾难性事件的共同特点是能够对人民群众的生命、健康和财产造成伤害。()

火场逃生六个“会”：会跑、会爬、会藏、会跳、会滚和会现，其中“会藏”就是利用卫生间放满水的浴缸躲藏，不让大火烧到。()

Thanks to computers, in the future people______.

人民防空宣传教育必须统筹协调社会资源，融入社会宣传教育体系，努力形成“大宣传教育”工作格局。()

A. that are always in operation in a healthy person
B. which remain unharmful so long as they are not activated
C. that can be driven out of normal cells
D. which normal cells can"t turn off