双胍类降血糖药物的降糖作用机制是A.抑制肝糖原的分解B.增加基础胰岛素的分泌量C.改

题型:单项选择题

问题:

双胍类降血糖药物的降糖作用机制是

A.抑制肝糖原的分解
B.增加基础胰岛素的分泌量
C.改变餐时胰岛素的分泌模式
D.延缓肠道碳水化合物的吸收
E.激活过氧化物酶增殖体活化因子受体

考点:临床执业医师临床执业医师
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海藻精华

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I clearly remember my mom telling me to drink milk every day—one glass in the morning and another at night. I also remember loving it while my sister thought quite the opposite—she would surreptitiously pour her milk into the sink or water the plants with it! I guess I should thank my mom for making us drink a lot of milk, so rich in calcium(钙), during those important years.

Today, calcium shortage is one of the main concerns of women in their 30s or even early 20s. The great fear is that when we reach our 50s or 60s, osteoprosis(骨质疏松症)will set in. That is why you can see a lot of advertisements for products supposedly containing a lot of calcium.

Because calcium is not that easy to acquire from the food we normally eat, busy women these days should take calcium supplements(补充物). There are a lot of different forms of these---calcium carbonate(碳酸钙),oyster(牡蛎)shell or bone-meal-based calcium supplements.

You have to be careful when choosing which kind to take. This is because calcium is not easily absorbed by the body. So the fact that you are taking supplements doesn’t mean that the body is actually benefiting from them. Different supplements may have different instructions on dosage(剂量)and manner of intake. You can ask your doctor to help you determine which supplement is the best for your needs.

小题1:From what the author’s mother did we may infer that___________________.

A.her children had osteoporosis

B.she knew her children would benefit from milk

C.she must have suffered from osteorosis

D.she didn’t like her daughter who didn’t obey her order小题2: Based on the passage, which of the following is NOT true?

A.The author’s sister will suffer from osteoprosis when reaches her 50s or 60s

B.Many businessmen have already been selling products supposedly containing calcium.

C.We can’t get enough calcium only from food we eat every day

D.Women as young as their 20s should be concerned about calcium shortage小题3:What does the underlined word “surreptitiously” in the first paragraph probably mean?

A.Honestly

B.Frankly

C.Secretly

D.Curiously小题4:We may infer from the last paragraph that____________________.

A.what one chooses as a calcium supplement might not work

B.one shouldn’t take in calcium without the permission of a doctor

C.the more calcium supplements one uses, the more calcium one can take in

D.it is dangerous to use calcium supplements without the guidance

题型:单项选择题

典型的Ethernet交换机端口支持10/100BASE-T两种速率,采用的是( )。

A.并发连接技术

B.速率变换技术

C.自动侦测技术

D.轮询控制技术

题型:单项选择题

在严重风险事件发生或即将发生时付诸实施的是损失控制计划系统中的( )。

A.预防汁划
B.灾难计划
C.应急计划
D.预警计划

题型:单项选择题

关于视网膜分层结构的描述不正确的是()。

A.光线首先通过神经节细胞层、内核层和外核层才能到达光感受器

B.内核层包含双极细胞、水平细胞和无长突细胞的胞体

C.光感受器细胞的胞体位于光感受器外段层

D.内、外网状层中分布着多种细胞的突触,并在此形成突触联系

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