A. system(系统):在生物学中,特定类型的器官进一步组合会形成系统,比如消化系统由胃、小肠、大肠等多种器官组合而成,符合器官组合形成更高级结构的描述,该选项正确。B. body(身体):身体是一个更宽泛的概念,它包含了所有的器官、系统、组织等,并不是由器官直接组合形成的一个特定层级结构,所以该选项错误。C. ske...
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The human body is composed of organs, each a definite job to do.A.hasB.havingC.to haveD.had 答案 B考查非谓语动词。句意:人体是由器官组成的,每个器官都有特定的工作。逗号前的句子主语为the human body,而逗号后的句子主语为each,且两个分句之间没有代词连接,故可以判断逗号后为独立主格结构做状语。
States Parties condemn all propaganda and all organizations which are based on ideas or theories of superiority of one race or group of persons of one colour or ethnic origin, or which attempt to justify or promote racial hatred and discrimination in any form, and undertake to adopt immediate a...
enter the bloodstream. But there is much evidence that chemicals used in plastic production are bad for human health. Even if nanoplastics themselves are notdeleterious, they can serve as carriers for the dangerous chemicals, inc...
Since 200 BC, goji berries14(use) in traditional Chinese medicine. In China, goji berries are known15“wolfberry fruits”,and they were once mentioned in the16(old) book of Chinese herbs in existence,ShenNongBenCaoJing. They are also known to act17(posi...
Researchers at the University of California, San Francisco, have demonstrated a new way to transplant cells into organs by piercing liver cells with rapid pulses of electricity. CAS holds 17th National Science Week From May 20 to 21, Chinese Academy of Sciences (CAS) held the 17th National Scie...
Tissues are grouped together to form ___. A. cells B. organs C. systems D. populations 相关知识点: 试题来源: 解析 B。组织组合在一起形成器官。选项 A“cells”是细胞;选项 C“systems”是系统;选项 D“populations”是种群。反馈 收藏
3.As for musical ability, it may be that what is inherited is an especially sensitive ear, a peculiar structure of the hands or the vocal organs connections between nerves and muscles that make it comparatively easy to learn the movements a musician must execute. ...
In 285 patients, 10.5% (n = 30) had evidence of chromosomal aberrations while nearly a quarter (n = 69; 24.2%) had a potential monogenic form of male infertility. The latter ranged from variants in genes previously reported to cause male infertility with or without other phenotypes...