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【简答题】
Read the following introdutory paragraph and answer the questions: Since most people experience stress on a daily basis, it is advisable to try to take relaxation breaks every day. Some people set aside time for one long relaxation break of 15 to 20 minutes each day. Other people try to take a shorter relaxation break several times a day to help deal with stressful situations as they occur. Even if a person can only take one or two such breaks in a day, this may help relieve the stress, Each of these short relaxation breaks consist of a series of steps involving taking deep breaths, relaxing tight muscles, and concentrating on feeling calm. What process or procedure do you think this essay will describe? ______________________________________ What will be the main idea of each body paragraphs? Body paragraph 1: ____________________________________ Body paragraph 2: ____________________________________ Body paragraph 3:_____________________________________
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举一反三
【单选题】下列各对溶液中,中间用半透膜隔开,有较多水分子自左向右渗透的是:
A.
0.5mol·L -1 CaCl 2 ┃0.5mol·L -1 Na 2 SO 4
B.
0.5mol·L -1 NaCl ┃0.5mol·L -1 BaCl 2
C.
0.5mol·L -1 葡萄糖 ┃0.5mol·L -1 蔗糖
D.
0.5mol·L -1 NaCl ┃0.5mol·L -1 葡萄糖
【单选题】下列各对稀水溶液中 , 中间用半透膜隔开 , 有较多水分子自右向左渗透的是:
A.
0.1 mol/L CaCl 2 │0.1 mol/L Na 2 SO 4
B.
0.1 mol/L HAc │0.1 mol/L NaCl
C.
0.1 mol/L C 6 H 12 O 6 │0.1 mol/L C 12 H 22 O 11
D.
0.1 mol/L NaCl │0.1 mol/L C 6 H 12 O 6
【单选题】下列各对溶液中,中间用半透膜隔开,有较多水分子从左向右渗透的是( )
A.
0.1mol/L葡萄糖 | 0.1mol/L 蔗糖
B.
0.1mol/LCaCl 2 | 0.1mol/LNaCl
C.
0.1mol/L葡萄糖 | 0.1mol/LNaCl
D.
0.1mol/LCaCl 2 | 0.1mol/LNa 2 SO 4
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