句型转换(每小题1分，共5分)

小题1:Lucy’s pen is better than Kate’s.(改为同义句)

Kate’s pen is                    Lucy’s.

小题2:Betty has to take the medicine three times a day.(对画线部分提问)

______  ______  dose Betty                  take the medicine?

小题3:My mother goes to work by bike.(对画线部分提问)

                    Your mother                     to work?

小题4:The twins often visit their uncle on weekends.(用next weekend改写句子)

The twins   ___                  their uncle next weekend.

小题5:He started learning English when he was five years old.(改写句子)

He started learning English ________    ___________  ________  _______.

小明发现月饼盒里的脱氧剂部分呈红褐色，查阅资料得知脱氧剂中含有铁粉和活性炭。  他猜想这包脱氧剂中可能含有：

①Cu和C；②Fe₂O₃和C；③Fe₃O₄和C；④Fe₃O₄、C和Fe； ⑤Fe₂O₃、C和Fe。其中猜想合理的是  [ ]

A．①③⑤    

B．②④⑤      

C．②⑤    

D．④⑤