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【简答题】
与垂体毗邻的结构为（）。|翼管神经位于（）。|蝶的自然开口位于（）。|视神经管的突起位于（）。|颈内动脉管突起位于（）。 A. 蝶下壁外侧的翼突根部 B. 蝶外侧壁的下部 C. 蝶外侧壁的上部 D. 蝶前壁上方近鼻中隔处 E. 蝶顶部
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举一反三
【简答题】__________是表音文字所没有的一种构形要素，而且各种类型都有各自的形态和书写要求。
【单选题】使得老舍从无名小卒成为名作家的是( )。
A.
《老张的哲学》《赵子曰》《二马》
B.
《骆驼祥子》《月牙儿》
C.
《四世同堂》 、《残雾》
D.
《茶馆》、《龙须沟》
【单选题】What does the man usually de to spend his weekends in summer?
A.
Goes to swimming.
B.
Does some odd jobs.
C.
Sits in the park.
【多选题】What are the functions of lysosomes?
A.
Many extracellular particles and molecules ingested by cells end up in lysosomes, which are membranous sacs of hydrolytic enzymes that carry out the controlled intracellular digestion of both extracellular materials and worn-out organelles.
B.
They contain about 40 types of hydrolytic enzymes, including those that degrade proteins, nucleic acids, oligosaccharides, and lipids.
C.
All of these enzymes are optimally active in the acidic conditions (pH ~5) maintained within lysosomes.
D.
The membrane of the lysosome normally keeps these destructive enzymes out of the cytosol (whose pH is about 7.2), but the enzymes’ acid dependence protects the contents of the cytosol against damage should some of them escape.
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