The word "laborious" in line 6 is closest in meaning to

Câu hỏi :

Read the passage and choose the best answer for each question below.

A. unfamiliar 

B. primitive

C.  skilled

D. difficult

* Đáp án

D

* Hướng dẫn giải

Chọn D

“laborious” = “difficult”: khó khăn, nặng nhọc

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