(
)1. There are
boys in the group. The
is Tom.
A.six; six
B.sixth; six
C.six; sixth
D.sixth; sixth
答案：C
解析：
第一空后接可数名词复数boys，表达数量含义，需用基数词six；第二空前有定冠词the，表达顺序“第六个”，需用序数词sixth，因此选C。
(
)2. —Would you like another cup of coffee, Linda?
—Thank you. But I had one cup, and I'm drinking
cup.
A.one
B.the first
C.the second
D.the third
答案：C
解析：
先分析语境：句中说明Linda已经喝了1杯咖啡，现在正在喝的是第二杯。逐一判断选项：A选项one不符合语境逻辑；B选项the first表示第一，和已经喝了一杯的前提矛盾；D选项the third表示第三，无对应依据；C选项the second表示第二，符合题意。
(
)3. —Excuse me. Which is the way to the museum?
—Sorry, I don't know. This is my
time here.
A.one
B.first
C.the first
D.the second
点拨 第1小题,第一个设空处后为可数名词复数boys,应用基数词修饰;第二个设空处所在句表示“第六位是Tom”,应用序数词。故选C。第2小题,由“But I had one cup”可知,“我”在拒绝对方“再来一杯咖啡”的提议,因为“我”已经喝了一杯,由此可知,“我”正在喝“第二”杯,空处应表示“第二”。故选C。第3小题,由答句中“I don't know”可知,“我”不知道路线,这应是“我”第一次来这里,空处应用序数词。空前有my,空处的序数词前不用加定冠词the。故选B。
答案：B
解析：
1. 根据答句中“I don't know”可知说话人不熟悉当地路线，是第一次来这里，需用序数词表顺序。2. 空格前已有形容词性物主代词my修饰，序数词前不需要再加定冠词the，排除C、D选项，A选项基数词one不符合语境，最终选B。
[反馈练习]（亮点原创）根据提示或用括号内所给词的适当形式填空，并回答问题。
There are
twenty-one
(twenty-one) students in front of Liu Tao, and there are
eighteen
(十八) behind him. From this we know Liu Tao is
the twenty-second
student in the line.
Question: How many students are there in the line?
There are forty.
答案：1. twenty-one 2. eighteen 3. the twenty-second 4. There are forty.
