Đáp án C. if => unless
Giải thích: Dịch nghĩa, hai vế câu mâu thuẫn với nhau.
Dịch nghĩa: Học sinh không được phép sử dụng những chất hóa học này mà không nằm dưới sự giám sát của giáo viên.
Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions
Students (A) are not allowed to handle (B) these chemicals (C)if they are under the supervision (D) of a teacher
A. are
B. these
C. if
D. of
Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
These exercises (A) look easy (B), but they are very relatively (C) difficult for us (D).
A. These exercises
B. easy
C. very relatively
D. for us
Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
These exercises look easy, but they are very relatively difficult for us
A. These exercises
B. easy
C. very relatively
D. for
Mark the letter A, B, C or B on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
Our students are (A) obedience and (B) hard-working, (C) but they are mischievous (D) sometimes
A. obedience
B. hard-working
C. but
D. sometimes
Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
Nearly (A) chemical agents are harmful (B) to living tissues (C) if enough of them is taken (D).
A. Nearly
B. are harmful
C. living tissues
D. is taken
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I am not fond of reading fiction books as they are imaginable ones which are not real.
A. imaginable
B. as
C. fond of
D. are
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Foreign students who (A) are doing a decision (B) about which school (C) to attend may not know exactly where (D) the choices are located
A. are doing
B. about which
C. to attend
D. the choices
Mark the letter A, B, C or D to indicate the underlined part that needs correction in each of the following questions.
Question 6: (A) One or the other of the secretaries (B) have to attend the meeting. But (C) both of them are reluctant (D) to do so.
A. One or the other
B. Have To
C. Both of them
D. To do so
Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
Insurance rates are not the same for different people (A) because (B) they are not likely (C) have (D) the same risk.
A. because
B. they
C. have
D. the same risk.