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【简答题】
图是人体血液循环模式图，请据图回答： （1）在A、B处进行气体交换，A处气体交换的实质是______________________________，B处或静脉血变成了动脉血或二氧化碳减少气体交换的结果是___________________。 （2）E处同C处相比__________________物质的含量明显减少。 （3）图示的血管A、B、C、D、E中，饭后1.5小时血糖浓度最高的血管是__________________，此时体内__________________分泌量增加，这种激素在血糖调节中的作用是_______________________________________。 （4）与肾动脉相比，血管D中血液成分的特点是__________________________________________。 （5）在静脉管腔内有一种称为___________的特殊结构能防止血液倒流。
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【单选题】根据下面材料，回答题。 The Drink Your Body Needs Most 1 Our bodies are estimated to be about 60% to 70% water. Blood is mostly water and our muscles, lungs, and brain all contain a lot of water. Water is needed ...
A.
Ounces of water needed per day
B.
Importance of water
C.
Composition of water
D.
Signs of dehydration
E.
Supply of water
F.
Necessity for bringing a bottle for water
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【单选题】We also need to plan_______ so that we're in a position to deal with the likely levels of climate change
A.
advance
B.
ahead
C.
alive
D.
alone
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