W: It’s well-known science fiction plot to freeze a body and bring it back to life years later.
However, this may no longer be so far from the truth. Joining us from our Cardiff studio is Professor Andrew Morgan, who’s been doing some research into this subject. Professor Morgan.
M: Yes, well, I’ve been looking into the ability of certain animals to freeze themselves for a certain amount of time, and then to come back to life when the circumstances around them change. And, what I’ve been working on over the past two years is the particular process that enables them to do this.
W: What have you actually discovered
M: I think it’s a particular chemical in the animals’ bodies which begins to work under certain circumstances. And I’m now experimenting with this chemical to see if I can get other animals that wouldn’t normally be able to freeze themselves to be able to do this.
W: Have you had any
A. About ten years.
B. About two years.
C. About twenty years.
D. About thirteen years.
| Immigrants are consumers as well as producers, so
they create jobs as well as taking them. And the work they do need not be at the
expense of native workers. Immigrants often hold jobs that natives are unwilling
to accept at any feasible wage. Also, immigrants sometimes help to keep industries viable (能存活的) that would otherwise disappear altogether, causing employment to fall. This was the conclusion of a study of the Los Angeles garment industry in the 1970s and 1980s. And when immigrants working for low wages do put downward pressure on natives’ wages, they may raise the (real) wages of natives in general by keeping prices lower than they otherwise would be. In theory, then, the net effect of immigration on native wages is uncertain. Unfortunately, most of the empirical (经验主义的) research on whether immigrants make natives A. sometimes help to maintain the existence of some industries B. sometimes cause employment to fall C. may lower the wages of natives in general D. may help promote inflation [多选题]关于杆塔接地体的引出线，以下哪些要求不正确？（ ）
A.接地体引出线的截面不应小于50mm2，并应进行热稳定验算 B.接地体引出线表面应进行有效的防腐处理 C.接地体引出线的截面不应小于25mm2，并应进行热稳定验算 D.接地体引出线的表面可不进行有效的防腐处理 [多选题]爱国、敬业、诚信、友善的价值追求回答了我们要培育什么样的公民的重大问题，涵盖了（）等各个方面，是每一个公民都应当遵守的道德规范。
A.个人品德 B.职业道德 C.家庭美德 D.社会公德 [多项选择]下列属行政主体做出的具体行政行为的是 ( )。
A. 公安局购买办公用品 B. 税务局征收税款 C. 民政局发放困难补助金 D. 工商局处罚无照经营者 E. 批准逮捕犯罪嫌疑人 [多选题]熔接机热熔的配套工具有哪些？（）
A.光纤开剥器 B.光纤夹具 C.光纤切割工具 D.光纤清洁工具 [判断题]随着爆破技术的发展，在城市中大量采用控制爆破新技术拆除旧建筑物。
[单选题]下面关于人民检察院、人民法院决定取保候审的案件,对取保候审的办理符合法律规定的是( )。
A.由执行取保候审的公安机关根据案情,决定采取保证人或交纳保证金的取保方式 B.负责执行的县级公安机关收到法律文书和有关材料后,应当指定犯罪嫌疑人、被告人居住地派出所执行 C.被取保候审人、保证人违反应当遵守的规定的,由执行地派出所决定没收保证金或者对保证人罚款,并将执行情况及时通知原决定取保候审的机关 D.人民法院、人民检察院作出解除、变更取保候审决定的,公安机关应当制作解除取保候审和退还保证金的决定书 [单项选择]引起幼儿脑膜炎的流感嗜血杆菌以何型多见
A. a型 B. c型 C. f型 D. b型 E. e型 [单项选择]男，55岁，一周来感觉右手和右脚麻木，心烦意乱，但生活工作仍能进行，心理治疗可以选择的心理测验的是
A. EP.Q问卷 B. 16PF问卷 C. MMPI调查表 D. HL-R成套测验 E. IAI测验 [单选题]关于前庭大腺囊肿正确的是()
A.囊肿多呈鸭卵大 B.好发于围绝经期 C.双侧居多 D.腺管堵塞分泌物积聚形成 E.易发生癌变 [单选题]气体类危险货物重（空）罐车（含带押运间车辆）每组间的隔离车不得少于（ ）辆（原则上需要用普通货物车辆隔离）。
A.5 B.8 C.10 D.15 [单选题]不间断电源的英文缩写是（ ）。
A.UPS B.DYP C.XDC D.APC [单选题]在气焊气割工艺中,使用的焊丝直径的选择依据是_____。
A.焊件的结构 B.焊件的厚度和坡口形式 C.火焰的种类 [单选题]1551 为防止高压输电线路被雷击中损毁,一般要用( )。
A.接闪杆 B.避雷器 C.接闪线 我来回答: 提交
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