题目

 There’s a hole in his ______, so we can see two of his fingers. A. cap                    B. glove         C. jeans                      D. blouse 答案：B1．“桔生南则为桔，桔生淮则为枳”，影响这一现象的主要因素是（　　）A．温度B．水分C．阳光D．空气