Dessa Chidhedza, a year younger than Grace,________,
A. like Grace, feels happy now and will have serious infections later
B. will be in need of drugs as much as Grace is now
C. does not know of any drugs that can help her
D. knows that she is going to die
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AIDS is widepread in Malawi and_______.
A. the average life expectancy goes down by 10%
B. nearly 30 million are infected with HIV
C. in 2002 over 2 million died
D. there are more women infected than men
According to the author, the number of orphans in Malawi could reach as high as ______.
A. 475,000
B. 100,000
C. 1,000,000
D. 5,000
Andrew Kayinga, 15, handicapped,________.
A. is spported by his relatives
B. thinks that he has a bright future before him
C. wants to get employment in a school
D. is not realistic about his future
浓度相同的下列阴离子的水溶液，碱度最强的是
Ac-(Ka＝1.8×10-5)
B. CN-(Ka＝6.2×10-10)
CO32-(Ka1＝4.2×10-7; Ka2＝5.6×10-11)
D. F-(Ka＝3.5×10-4)
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