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B3U4 Words in useFill in the blanks with the words given below. Change the form where necessary. Each word can be used only once.cluster imprison offset ambiguityglobalize stubborn compulsory contemplateconsole groan1. Although secondary education is, parents are not required to send their children to state schools.2. The economic situation has been worsening, causing economists towhether the present policies are sustainable.3. He was found guilty and wasin the Tower of London, where he died very quickly, aged only 47.4. It is obvious that the future of the Internet is tomore and more areas of the world, and that e-commerce and e-entertainment are going to go for more and more markets.5. However, your current losses should soon beby gains; the fund will produce a positive return of 11.6 percent over a nine-month period.6. Because she was so tall and slim, all the clothes looked marvelous on her and the other girls wouldtheir envy.7. This can be a helpful approach in discussion – someone may regard you assince you never want to change your mind, whereas you see yourself as determined.8. On weekends, the school parking lot is almost empty except that a few carsnear the entrance.9. In the photographer's finest pictures there is also a degree of, which allows them to be interpreted in a variety of ways.10. Tim stretched out a hand in apology for his thoughtless remarks and wasby a firm handshake from Mark.

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5.85%的NaCl溶液的质量摩尔浓度为(mol/kg)?

A. 1.00
B. 1.06
C. 0.018
D. 0.0177

将10毫克溶质溶于100毫升溶剂中,取其溶液1.0毫升,稀释为100毫升,试问稀释后的溶液浓度为?

A. 100ppm
B. 1.0ppm
C. 10ppm
D. 100ppb

饮用水中残留氯的质量浓度ρ(Cl2)不得超出2×10-6g·mL-1,与此相当的Cl2(M=71g/mol)的质量摩尔浓度b(B)约为()mol·kg·1。

A. 3×10-6
B. 3×10-5
C. 3×10-3
D. 3×10-2

由于溶液的溶质和溶剂的量是一定的,所以温度的变化将不会影响溶液的浓度。

A. 对
B. 错

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