阅读理解。

     Look at this boy. He is an English boy. His first name is Peter. His last name is Black.  His school ID

card number is three-two-eight-six-six-one-nine. His teacher is Miss Smith. Miss Smith is a good teacher. What's that? It's his backpack. It's blue. Where's his pencil-case? It's in his backpack.

根据短文内容，判断正（T）误（F）。

( )1. The boy is Peter Black.

( )2. His school ID card number is 3286699.

(     )3. His teacher's last name is Smith.

( )4. His backpack is black.

(     )5. His pencil-case is on the desk.

山茶油是一种绿色保健食品，其主要成分是柠檬醛。现从山茶油中提取7.6g柠檬醛，使其在氧气中完全燃烧，生成22g二氧化碳和7.2g水，则柠檬醛中(       )

A．只含有碳、氢元素

B．一定含有碳、氢元素，可能含有氧元素

C．一定含有碳、氢、氧元素

D．含有的元素无法确定