It is considered that the Amazon forests produce about _______- of the world’s oxygen.
A. 10%
B. 20%
C. 12%
D. 15%
查看答案
Which of the following statements is true according to the text?
A. Now the urgent task is to prevent the Amazon fires from making further mass destruction.
B. The fires make the issue of climate change and the environment at the ongoing G7 summit in France cancelled.
C. Global leaders reach an agreement over what the fires mean for the global environment.
D. The Amazon fires succeed in ringing the alarm bell foe the US President.
下列哪个音不是清辅音？
A. /p/
B. /m/
C. /s/
D. /f/
下列哪个音不是浊辅音
A. /r/
B. /j/
C. /l/
D. /ʃ/
下面哪些选项中的音是成对的清浊辅音？
A. /s,ʒ/
B. /k, g/
C. /w, v/
D. /t, b/
微信支付 
支付宝支付