【单选题】This is a key. It’s ___________blue key.
【单选题】飞行中的多轴飞行器所承受的力和力矩不包括
【单选题】The diagram shows a pea pod, which is a fruit Use the key to identify the fruit. 1. sepals fall off as soon as the flower is fertilised ............................ go to 2 sepals do not fall off as s...
A.
2. pod contains fewer than four seeds .............................................. A
B.
2. pod contains more than four seeds ............................................... B
C.
3. fruit splits to release several seeds ............................................... C
D.
3. fruit splits to release only one seed ............................................... D
【单选题】My money is ____, so I have to call my parents saying that I am missing them.
【单选题】I made a call to my parents yesterday, but _______ of them answered it.