By mentioning 'thumb sucking', the author wants to prove that______.
A．some behaviors are common before the age of 5
B．children will stop some behaviors as they grow
C．many behaviors only happen when children drop out
D．some parents overreact to their children's behavior

未分类题The underlined phrase in Paragraph 3 refers to______.A．in great timeB．religiouslyC．very soonD．naturally

未分类题According to paragraph 2, what has stood in the way of print medias further development?A．The decline of advertising revenues.B．The spread of digital news.C．The over-high operating cost.D．The large office buildings.

未分类题夹紧装置由()组成。

未分类题It is indicated in the last paragraph thatA．leadership studies should focus more on judgment.B．businesspeople, leaders in particular, are versatile.C．strengths can turn into weakness sometimes.D．judgment is the most crucial measure of leadership.

未分类题机床夹具一般由()组成。

未分类题In her advisers eyes, Margaret Thatcher wasA．a nightmare.B．a poor leader.C．a failure.D．a savior.

未分类题There is large concentration of ownership today______.A．so the quality standards from them have declinedB．although competition among them has increasedC．but the standards among newsrooms have improved over the yearsD．and this means that the qualifications of reporters is declining

未分类题Who are the kinds of reporters the writer seems to admire most?A．Reporters who are highly trained.B．Reporters who won't sully themselves.C．Reporters who are willing to sacrifice to chase after a story.D．Reporters who know how to sift through a lot of information.

未分类题The text is most likely part of a______.A．news articleB．columnC．research reportD．preface

未分类题The main idea of the second paragraph is______.A．diversity of the workforce has its disadvantagesB．besides new opportunities, the changing workforce also contain challengesC．the low educational levels of immigrants is a challenging problemD．America had better face the problem of declining skills or it will suffer

未分类题The invention of the method of altering childrens behavior. is owing to______.A．the desirable behaviorB．reinforced practiceC．decades of studyD．replacement of unwanted behaviors

未分类题Which of the following is NOT one of the factors affecting the result of changing childrens behavior?A．The reinforced practice of the positive opposite.B．The way parents behave at home.C．The influences of other relationships of children.D．The separation of the parents of young children.

未分类题According to the author, the entertainment he discusses was so popular because______.A．people didn't know they were being trickedB．people liked the performances and the chance to test their own judgmentC．people had a double consciousness of love and hate of itD．people merely treated it an interesting game of deciding which was real and not

未分类题It can be concluded from the text that______.A．the entertainment died out as society became more skepticalB．the skills the entertainment employed were part of its ultimate demiseC．the entertainment used highly skilled understanding of human natureD．the entertainment served a very important part role in the lives of people

未分类题By mentioning microbe, the author intends to______.A．advocate that animals with a nervous system can all learnB．argue that learning is an adaptation to a changing environmentC．claim that learning has some kind of side effectsD．prove that the adaptation may not include learning with a nervous system