8. The most elaborate of all bird nests is the large, domed communal structure built by social weaverbirds.
题目出的很容易,但有个地方没搞懂."The most elaborate of all bird nests"这样的表达正确嘛?
26. In every society there are norms that say individuals how they are supposed to behave.
是不是把"say"改成tell?
31.Birds eggs vary greatly of size, shape and color.
是不是把"of"改成in?
34.Xanthines have both good and bad effects on the body, and these effects are generally determined on the size and regularity of dosage.
是不是该把"determined on"改成determined by? | 
