单项选择题 以下不属于危险品的是( )。 A. 氧化剂 B. 爆炸品 C. 放射性物品 D. 受热易变形物品

单项选择题 Directions: In this part of the test, you will hear several short talks and conversations. After each of these, you will hear a few questions. Listen carefully because you will hear the talk or conversation and questions ONLY ONCE. When you hear a question read the four answer choices and choose the best answer to that question. Then write the letter of the answer you have chosen in the corresponding space in your ANSWER BOOKLET. 12)

多项选择题 有助于预防动脉粥样硬化的维生素包括(    )    A．维生素E  B．维生素C  C．维生素B6  D．维生素B12  E．叶酸