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【简答题】
Please complete the chart based on what you have learned in the passage. No more than THREE words for each blank. Problems related to health (1) one billion people--- lack access to ____________ (2) 2.5 billion--- no adequate________services (3) 10000-20000 children are killed by preventable_________ 2. Problems related to environment (1) tens of millions—forced to move—without__________ to make way for the reservoirs (2) 20% of _________ are endangered due to the damage of ________river ecosystem . (3) Certain irrigation practices ________ soil quality and reduce agricultural productivity. (4) Ground water are pumped down faster than they are naturally ______. 3. Possible Solutions (1) ______ of policy: basic human and environmental needs; some for all (2) _______ used in smarter ways in developed regions rather than building new facilities (3) new _____ to conserve water in homes and industry (4) new built projects with higher__________ and more_____________ 4. Targets Clean water to drink Adequate water to grow food Free from water- related illness Meet the demand of fewer resouces, respecting ecological criteria and to a smaller budg
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皮皮学刷刷变学霸
举一反三
【单选题】–Your coat looks very nice. What’s it made______? --Cotton, and it is made ______ Wuhan.
A.
from, in
B.
of, in
C.
from, on
D.
of, on
【单选题】下列哪项与胰岛素的结构特点不符合
A.
其结构由、两个肽链组成
B.
由于结构不稳定,需要冷冻保存
C.
临床使用的是偏酸性水溶液
D.
其性质是两性,具等电点
E.
在中性条件下,胰岛素结晶由六个胰岛素分子组成三个二聚体,与两个锌原子结合形成复合物
【单选题】如图为牛胰岛素结构图,该物质中—S—S—是由两个—SH脱去两个H形成的。下列说法正确的是( )
A.
牛胰岛素为51肽,其中含有50个肽键
B.
牛胰岛素中至少含有2个—NH 2 和2个—COOH
C.
牛胰岛素水解产物含有20种不同的氨基酸
D.
牛胰岛素形成时,减少的相对分子质量为882
【单选题】What is the purpose of the most recent guidelines made by the ITF?
A.
To eliminate the use of smart rackets.
B.
To stop the development of high tech equipment.
C.
To encourage fair competition.
D.
To encourage the use of smart rackets.
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