By citing the toothpaste is out of the tube, the author intends to mean that______. A．a younger generation of unskilled immigrants has been produced and their number will grow B．the unskilled immigrants have dragged down the wages of the natives and will continue to do so C．the children of unskilled immigrants have done poorly in school and will likely to drop out soon D．the unskilled immigrants have already been here and will certainly not return此题为多项选择题。
A. A．a B.the C.the D.the
【参考答案】
A 语义理解题。根据信息定位到第五段第二句。首句提到的Theseyoungsters指代上段提到的无技术移民的子......