The chemicals in the vegetables and fruit are bad ____ our health.

A. from B. with C. of D. for

D 【解析】 from從，來自；with帶有，伴隨；of 關(guān)于，……的；for為了，對(duì)于。句意：蔬菜和水果里面的化學(xué)品對(duì)我們的健康有害。短語(yǔ)be bad for對(duì)……有害，故選D。

---________does he go shopping? ---Twice a week.

A. How B. How often C. How long D. How many times

B 【解析】 句意：——他多久去購(gòu)物一次？——一周兩次。 How如何，對(duì)方式提問；How often多久一次，對(duì)頻率提問；How long多長(zhǎng)時(shí)間，對(duì)時(shí)間段提問；How many times多少次，對(duì)次數(shù)提問。根據(jù)Twice a week可知此處對(duì)頻率提問，故用疑問詞how often，故選B。

（題文）________does he use the Internet a week?---Once.

A. How

B. How often

C. How long

D. How many times

D 【解析】 試題句意：你一周用幾次網(wǎng)絡(luò)啊？——一次。A. How 怎么樣；B. How often多久一次；C. how long多長(zhǎng)時(shí)間；D. How many times多少次；根據(jù)句意及其回答可知，故答案選D。

---________did you sleep last night? ---Nine hours.

A. How B. How long C. How many hours D. How often

B 【解析】 句意：——你昨天晚上睡了多長(zhǎng)時(shí)間？——9個(gè)小時(shí)。 How如何，對(duì)方式提問；How long多長(zhǎng)時(shí)間的，對(duì)時(shí)間段提問；How many hours 多少小時(shí)，對(duì)小時(shí)的數(shù)量提問；How often多久一次，對(duì)頻率提問；根據(jù)Nine hours可知此處對(duì)時(shí)間段提問，故用疑問詞how long，故選B。

________11-year-old girl has ________one-year-old younger brother.

A. A, an B. An, a C. The, a D. The, an

C 【解析】 句意：那個(gè)11歲的女孩有一個(gè)1歲大的弟弟。 a/an一個(gè)，表示泛指；the那個(gè)，表示特指。one是輔音音素開頭，故用不定冠詞a修飾one-year-old younger brother.結(jié)合句意，表示特指那個(gè)11歲的女孩，故用the修飾。故選C。

The answers ________the questions about watching TV are very interesting.

A. to B. of C. for D. at

A 【解析】 句意：關(guān)于看電視的問題的答案是非常有趣的。 to向；of...…的；for為了；at在。the answer to表示“……的答案”，故選A。

（題文）_______junk food tastes very good, ________it isn’t healthy.

A. Although, but B. Although, / C. But, although D. But,/

B 【解析】 句意：盡管垃圾食品品嘗起來非常好，但是它不健康。 Although盡管，引導(dǎo)讓步狀語(yǔ)從句，不與but連用，結(jié)合句意，前半句表示盡管垃圾食品好，故用連詞Although，故選B。

My mother wants me _______milk.

A. drink B. drinking C. to drink D. drinks

C 【解析】 句意：我的母親想要我喝牛奶。 want sb to do sth想要某人做某事，故為to drink，故選C。

Eating vegetables ________our health.

A. are good for B. is good for C. are good at D. is good at

B 【解析】 句意：吃蔬菜有利于我們的健康。 be good for有利于，be good at擅長(zhǎng)。結(jié)合句意，吃蔬菜有利于健康。主語(yǔ)eating vegetables是動(dòng)名詞，看成一個(gè)整體，謂語(yǔ)用第三人稱單數(shù)，故選B。

（題文）-- How often does Lara play the trumpets?

--- once or a week, I'm not sure.

A. May be; twice B. Maybe; twice

C. Maybe; two time D. May be; two times

B 【解析】 句意：——?jiǎng)诶�多久吹一次小�?hào)？——也許一周一到兩次，我不確定。May be可能是，may為情態(tài)動(dòng)詞，必須放在主語(yǔ)的后面，maybe或許，大概，為副詞形式，放于句首，首先排除A,D； 兩次為twice，故答案為B。