问题
选择题
He had ______ in finding Mr. Green’s house.
A.many difficulties
B.many difficulty
C.much difficulties
D.much difficulty
答案
答案:D
词义辨析。Many和much都表示多,many修饰可数名词,much修饰不可数名词。本句中difficulty死不可数名词,故选D。
He had ______ in finding Mr. Green’s house.
A.many difficulties
B.many difficulty
C.much difficulties
D.much difficulty
答案:D
词义辨析。Many和much都表示多,many修饰可数名词,much修饰不可数名词。本句中difficulty死不可数名词,故选D。
已知某山区六个乡镇C1,C2,…,C6之间的公路距离(公里数)如下表:
C1 | C2 | C3 | C4 | C5 | C6 | |
C1 | 0 | 50 | ∞ | 40 | 25 | 10 |
C2 | 50 | 0 | 15 | 20 | ∞ | 25 |
C3 | ∞ | 15 | 0 | 10 | 20 | ∞ |
C4 | 40 | 20 | 10 | 0 | 10 | 30 |
C5 | 25 | ∞ | 20 | 10 | 0 | 25 |
C6 | 10 | 25 | ∞ | 30 | 25 | 0 |
其中符号“∞”表示两个乡镇之间没有直通公路。乡镇C1到C3虽然没有直通公路,但可以经过其他乡镇达到,根据上表,可以算出C1到C3最短的路程为()公里。
A.35
B.40
C.45
D.50