下列物质中,靠主动运输进入细胞的物质是()
A、H20
B、甘油
C、O2
D、Na+
参考答案:D
Look and judge. 读一读,并判断对(√)错(×) 。
( ) 1. Let's go to the library to fly kites.
( ) 2. Let's go to the restaurant to have lunch.
( ) 3. We can buy a bicycle in the tea shop.
( ) 4. I want to buy some bananas. Let's go to the market.
下列物质中有显著氧化作用的是()
A、CO
B、H2SO4
C、Cl2
D、CO2