题目

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。 Getting your children to study can be a little like getting them to eat their vegetables. 1  Make a study time and have it at the same time every day. This will help your kids to learn to schedule their day and will give them a sense of control over how they spend their time. Allow them to study in blocks of time, such as for half an hour with a five-minute break in the middle.    2   Ideal （理想的）study times are after dinner or right after school before d5、某种病毒已侵入人体细胞内，机体免靶细胞发挥的免疫作用是                  A．体液免疫           B．细胞免疫       C．自身免疫       D．非特异性免疫