Which of the following is caused by the shortage of sleep？A．Lack of self-control.B．Mental

Which of the following is a possible cause of the colony－collapse disorder？A．Population ex

Which of the following is true about lasting damage？A．Too little food is the only cause of

Which of the following statements is INCORRECT？A．The famine is caused by severe drought.B．

Which of the following is the best as the title of the passage？A．Causes of Stress.B．Types

Which of the following is the main cause of the recall of Toyota in the U.S.？A．Engine prob

Which of the following is NOT mentioned as a caus