1：D A wandering cow was captured by the police

　　2：D It was sent to the animal control department

　　3：B lt is going to be expanded

　　4：C Some ancient wall paintings from Australia

　　5：A Pick up trash

　　6：A They are especially intelligent

　　7：B Children may be tempted to drop litter

　　8：C It will cover different areas of science.

　　9：C It will be more entertaining.

　　10：A People interested in science.

　　11：B Provide financial support.

　　12：D Dissatisfied

　　13：A He is too concerned with being perfect

　　14：C Miserable

　　15：B Compare his present with his past only

　　16：C They are more likely to become engineers

　　17：D Respond more positively to boys comments

　　18：A Offer personalized teaching materials

　　19：C lt does not rain as much as people think

　　20：B The rain is usually very light

　　21：D It has mild weather both in summer and in winter

　　22：D It comes from straining one's muscles in a unusual way

　　23：A Blood flow and body heat increse in the affected area

　　24：B About two days

　　25：C Have a hot shower