[单项选择]Passage Three

From the beginning, migration has been 6ne of the most conspicuous features of human history. Humanity did not appear simultaneously all over the earth but, according to the current scientific consensus, first evolved in Africa, and from there spread far and wide. Even after mankind had populated most of the planet, migration continued to play a decisive role in history down the centuries, as people contended for territory and the resources that go with it. In many of history’s biggest movements of people, the migrants were not volunteers. In the 17th and 18th centuries, 15 million people were taken as slaves from Africa and shipped to Brazil, the Caribbean and North America. In the 19th century, between 10 and 40 million indentured workers (契约工人，苦力) were sent in vast numbers around the world, main A. their fight for territory and resources B. their religious beliefs C. their races D. their sexes 查看答案 更多"Passage Three From the be"的相关试题: [单项选择]Passage Three From the beginning, migration has been 6ne of the most conspicuous features of human history. Humanity did not appear simultaneously all over the earth but, according to the current scientific consensus, first evolved in Africa, and from there spread far and wide. Even after mankind had populated most of the planet, migration continued to play a decisive role in history down the centuries, as people contended for territory and the resources that go with it. In many of history’s biggest movements of people, the migrants were not volunteers. In the 17th and 18th centuries, 15 million people were taken as slaves from Africa and shipped to Brazil, the Caribbean and North America. In the 19th century, between 10 and 40 million indentured workers (契约工人，苦力) were sent in vast numbers around the world, main A. a better life B. cheap land C. high wages D. economic benefits 查看答案 [单项选择]Passage Three Three years ago, researchers announced the discovery of human genes that were capable of turning ordinary cells into malignant ones. The news met with some skepticism. Experts asked how a single gene could cause such a dramatic change. Why does cancer take years or even decades to develop if it is caused by such a simple and direct process In last week’s issue of the, three research teams answered those questions by setting forth a new model for understanding the role of oncogenes in cancer. Each group found that it does in fact take more than a single gene to produce cancer in normal cells. Teams at M. I. T and Cold Spring Harbor Laboratory on Long Island, N. Y. , reported that they could induce cancer in normal rat cells only by inserting at least two types of oncogene into the cells. "A single oncogene produced some changes, A. was caused by normal cells B. sometimes resulted from internal actions of the victim’s own body C. was a hereditary disease D. was a form of malignancy 查看答案 [单项选择] Passage Three A. To play the violin once again. B. To go to the United States. C. To apply for a scholarship. D. To have her performance taped. 查看答案 我来回答: 提交 最新试题 ●    [单选题]列车在双线区段反向运行时，机车前端一个头灯及中部右侧一个( )灯光。 ●    [判断题]( )向日葵不是油料作物。 ●    [单选题]若医院同类感染的罹患率显著高于该科室或病房历年一般发病率水平，则证实医院感染出现 ●    [单选题]依据《江苏省国有资金投资工程建设项目招标投标管理办法》，评标委员会成员不应当（）招标投标行 ●    [多选题]现金业务主管岗位其主要职责（）。 ●    [单选题]下面促胰液素的生理作用中错误的是: 网站地图 我要搜题网  版权所有  ©2024  湘ICP备18016427号   购买搜题卡查看答案 [会员特权] 开通VIP， 查看 全部题目答案 [会员特权] 享免全部广告特权 推荐91天 ¥36.8 ￥80元 31天 ¥20.8 ￥40元 365天 ¥88.8 ￥188元 请选择支付方式 微信支付 支付宝支付 点击支付即表示同意并接受了《购买须知》 立即支付 系统将自动为您注册账号 已有账号登录 找回账号密码 请使用微信扫码支付 订单号： 截图扫码使用小程序[完全免费查看答案] 前往小程序 请不要关闭本页面，支付完成后请点击【支付完成】按钮 支付完成 取消支付 恭喜您，购买搜题卡成功 系统为您生成的账号密码如下： 账号 密码 重要提示：请拍照或截图保存账号密码！ 我要搜题网官网：https://www.woyaosouti.com 我已记住账号密码