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【单选题】
当前形势下,迫切需要加强国家安全教育,形成全民了解、支持、参与维护国家安全的良好局面。这是因为( )1国家安全是人民群众安居乐业的根本保障2我国的国家安全形势处于不可控的严峻局面3维护国家安全是我国宪法规定的公民的基本义务4国家安全是实现中华民族伟大复兴中国梦的重要保障A.
①②③
B.
①③④
C.
①②④
D.
③④
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【单选题】Which vessels carry blood away from the ventricles of the heart?
A.
venules
B.
veins
C.
arterioles
D.
arteries
【判断题】In a normal state, arteries are elastic tubes that recoil and carry blood in pulsating waves, known as the pulse.
A.
正确
B.
错误
【单选题】Arteries carry blood _______.
A.
towards the heart
B.
away from the heart
C.
towards the lungs
D.
away from the right atrium
【判断题】There are three types of vessels, each with a specific function. Veins take blood from the heart, arteries carry blood back to the heart, and capillaries connect arteries and veins. Capill aries are t...
A.
正确
B.
错误
【简答题】Listen to the news and choose the best answer to each question you hear. 1. disorders n. [ 可数名词 , 不可数名词 ] an illness that causes a part of the body to stop functioning correctly 失调;紊乱;不适;疾病。例如: a bloo...
【单选题】Which vessels carry blood back to the atria?
A.
veins
B.
arteries
C.
arterioles
D.
capillaries
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