A-A+
In Para. 4 the author suggests that ______.A．
问题详情
In Para. 4, the author suggests that ______.
A．scientific predictions are accurate and trustworthy
B．the effectiveness of the models simulating the climate is not yet proved
C．observed climate changes is the representative of changes in global warming
D．mankind is the only one who is to blame on the issue of global warming
参考答案
正确答案：B
解析：细节理解题。对应文中第四段The validity of these models has been a subject of controversy. Skepticssay that the climate is too complicated to be accurately modeled，and that there are too many unknowns．因此B正确。
