18.The number of registered participants in this year's marathon was half _____.A.of last year's18.The number of registered participants in this year's marathon was half _____.\x0bA.of last year's B.those of last year's C.of those of last yea

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18.The number of registered participants in this year's marathon was half _____.A.of last year's18.The number of registered participants in this year's marathon was half _____.\x0bA.of last year's B.those of last year's C.of those of last yea
18.The number of registered participants in this year's marathon was half _____.A.of last year's
18.The number of registered participants in this year's marathon was half _____.\x0bA.of last year's     
B.those of last year's   
C.of those of last year.  
D.that of last year's

18.The number of registered participants in this year's marathon was half _____.A.of last year's18.The number of registered participants in this year's marathon was half _____.\x0bA.of last year's B.those of last year's C.of those of last yea
答案D
考点:比较级
比较的成分是否属于同类事物或同类概念.如:
The number of registered participants in this year’s marathon was half that of last year’s.
that代前面的the number

a