21:  Regular child care provided outside the home or by someone other than the mother does not in itself undermine healthy emotional connections between mothers and their 15-month-old infants, according to a long-term national study. T...

(单选题)15: Man: That's a beautiful hat you have on! Woman: _______.  A: Actually, I don't like it very much. B: Yes, I think so. C: Oh, thank you. I just got it yesterday. D: No, it's not that beautiful. Yours is better. ...

(单选题)9:  I have nothing ______ to say. A: in particularly B:  in special C: in particular D: in specially ...

(单选题)20: Of swimming and football, he much preferred the former _______ the latter. A: than B: over C: to D: from ...

(单选题)2:  High prices ______ low sales. A: go to B: lead to C: come to D: tend to ...

(单选题)19:  I spent two hours ______ my report. A: to write B: written C: writing D: write ...

(单选题)7:  They usually go for a walk in ______ with each other after supper. A: line B: pace C: time D: company ...

(单选题)18: Tony: Eric has decided to quit drinking.David: Again? ______  A: It's a difficult decision to make. B: Alcohol-addiction is dangerous. C: I wonder how long it will last this time. D: He's an alcohol addict. ...

(单选题)6: Young ______ he is, he handles things skillfully. A: if B: though C: while D: as ...

(单选题)17:  Alice: Stella, this is my boyfriend Rock.Stella: ______  A: You may only have one.  B:  Yours is lovely, too. C: Oh, really? Nice to meet you. D:  Very well, thank you. ...