类脂质体是由下列哪种物质与(或不与)胆固醇及其他物质构成的单室或多室囊泡

A．离子表面活性剂

B．非离子表面活性剂

C．磷脂

D．类脂质

E．豆磷脂

句型转换

1. Cut up the tomatoes and beef.(改为否定句)

                          up the tomatoes or beef.

2. The sweater is 35 yuan.(对画线部分提问)

                          is the sweater?

3. There's some bread on the table.(改为一般疑问句)

               there           bread on the table?

4. Finally, turn on the blender.(改为同义句)

                          turn on the blender.

5. The pancake is very delicious.(对画线部分提问)

               do you           the pancake?