单项选择

• 1、

  America's emphasis on the importance of education

• 2、

  I warned him to keep the matter confidential.

• 3、

  In 1861, it seemed odd that the Southern states wo

• 4、

  The steadily rising cost of labor has greatly incr

• 5、

  I suppose he will give in eventually.

• 6、

  The child couldn't comprehend the profound text bo

• 7、

  Mary was compelled to take in washing to help supp

• 8、

  Practically all species of animals communicate eit

• 9、

  John is collaborating with Mary in writing a book.

• 10、

  Nerve signals may travel through nerve or muscle f

• 11、

  When she was invited to the party, she readily acc

• 12、

  A deadly disease has affected these animals.

• 13、

  Don't get upset about trivial matters.

• 14、

  Even in a highly modernized country, manual work i

• 15、

  I rarely wear a raincoat because I spend most of m