A:①②
B:②③
C:①④
D:③④
将一根塑料绳一端扎紧,把绳尽可能撕成细丝,用手从上向下捋几下,发现细丝张开了(如图所示).细丝张开的原因是( )
Lingling had a fever. ______ face was red and _____ felt hot. ( )
Let's visit Mr Hand this weekend. (改为同义句)
____ ____ ____visit Mr Hand this weekend?