9. With more and more farmers moving to cities, an inadequate labor force is ________ becoming a major factor affecting the country’s grain output.

47. What can we know about BEACON?

3. Though we are surrounded with modern technologies, we ________ easily feel lonely.

20. The shop owner will get all these goods ordered ________ to the customers today.

30. —Mary, you water the plants in the garden and I will cook the dinner.—OK, ________.

53. Why do scientists clone monkeys?

（ ）也叫“助长性迁移”，是指一种学习对另一种学习的促进作用。

《关于深化教育教学改革全面提高义务教育质量的意见》中提出了为了推进国际交流，有条件的义务教育学校可以引进境外课程，使用境外教材。（ ）

4. Perseverance (毅力) is a kind of quality and that’s ________ it takes to do anything well.

45. What kind of summer camp did Herbst join in the seventh grade?

小刚是班里有名的淘气鬼， 但通过班主任章老师的长期教育，小刚开始认识到自己的错误，把这种错误归结为自己的原因，从而产生改过自新的意向。小刚属于品德不良纠正的（ ）

18. The professor ________ sit in his study for hours when he worked on a new project.