Since the 1930's chemical insecticides such as D.D.T _________ very effective in destroying disease-carrying insects.

Câu hỏi liên quan

• Choose the best answer:

  He accepted the cut in salary without complaint because he was afraid of .................

• A book may be studied by students as the ________ of a writing and analysis exercise in the form of a book report.

   

• Mark the letter A, B, C or D to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions:

  During the recession, many small companies were eradicated.

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• Choose the word that is CLOSEST in meaning to the underlined word in each of the following questions.

  The boy does not resemble his brother in any way.

• A computer networks usually includes either selected employees of a particular business or or people who do not work together but have similar interests.

• We work with many people who are different from us because every persons are unique.

• Identify the error in each sentence: 

  Students suppose (A) to read all the questions (B) carefully and find out (C) the answer to them (D).

• They need some new clothes, _______? 

• I am mad about fish but I_______like roast chicken.

• Vietnamese pioneers did water systems from logs with holes bored through their centers.

• Air pollution, together with littering, are causing many problems in our large, industrial cities today.

• The local economy which once used to be in crisis now depends to a great extent on menial jobs provided by the recent development of ecotourism.

• Dislike us, they are not very interested in sports and fitness activities.

• Could you mind telling me the way to the nearest restaurant?

• Choose the best answer among A, B, C or D that best completes each sentence:  She always follows rules and instructions in a very strict way; she always does everything by the ……

• Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the rest in the position of the main stress in each of the following questions.

   A. Familiar     B. Flexible     C. Favorite     D. Accurate

• Choose the correct answer:

  My father often says to me: “Don’t________ off more than you can________.”

• Thanks to his obstinacy, he achieved what he wanted. If he were discouraged earlier by this failures, he would not have reached his aims.

• More than 10,000 years ago, glaciers moved across the Minnesota region four time, leveling most of the land.

• Jame Dickey’s first poem was published during he was still a senior in college.