Câu hỏi:
21/06/2022 1,029Mark 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.
The (A) discovery of penicillin in 1928 (B) has not produced antibiotics (C) usefulfor the treatment of (D) infectious diseases until 1940.
Đáp án chính xác
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Trả lời:
Giải bởi Vietjack
Chọn đáp án B (has not produced did not produced)
- Sự việc này đã xảy ra vào một thời điểm xác định trong quá khứ động từ chia ở thì quá khứ đơn
"Việc phát hiện ra penicillin vào năm 1928 vẫn chưa tạo ra được kháng sinh hữu ích cho việc điều trị các bệnh truyền nhiễm mãi cho đến năm 1940."
Nhà sách VIETJACK:
CÂU HỎI HOT CÙNG CHỦ ĐỀ
Câu 1:
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.
(A) Before the invention of (B) the printing press, books (C) have been all printed (D) by hand.
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.
(A) Before the invention of (B) the printing press, books (C) have been all printed (D) by hand.
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Câu 3:
Read the following passage and mark the letter A, B, C, or D on your answer sheet to Indicate the correct answer to each of the questions from 31 to 35.
The term "virus" is derived from the Latin word for poison or slime. It was originally applied to the noxious stench emanating from swamps that was thought to cause a variety of diseases in the centuries before microbes were discovered and specifically linked to illness. But it was not until almost the end of the nineteenth century that a true virus was provento be the cause of a disease.
The natureof viruses made them impossible to detect for many years even after bacteria had been discovered and studied. Not only are viruses too small to be seen with a light microscope, they also cannot be detected through their biological activity, except as it occurs in conjunction with other organisms. In fact, viruses show no traces of biological activity by themselves. Unlike bacteria, they are not living agents in the strictest sense. Viruses are very simple pieces of organic material composed only of nucleic acid, either DNA or RNA, enclosed in a coat of protein made up of simple structural units. (Some viruses also contain carbohydrates and lipids.) They are parasites, requiring human, animal, or plant cells to live. The virus replicates by attaching to a cell and injecting its nucleic acid.’ once inside the cell, the DNA or RNA that contains the virus' genetic information takes over the cell's biological machinery, and the cell begins to manufacture viral proteins rather than its own.
Câu 31: Before microbes were discovered it was believed that some diseases were caused by____________.
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Câu 5:
Her talent and experience_____________her to the respect of her colleagues.
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Câu 7:
Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.
Sarah's predominant features, what you first noticed about her, were her stunning black hair and big, dark eyes.
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