【单选题】Decide which examples are from a conversation and which are from an academic paper. (1)
B.
from an academic paper
【简答题】无砟道床分为CRTSⅠ型板式、CRTSⅡ型板式、双块式以及道岔区()和板式无砟道床等。
【单选题】Decide which examples are from a conversation and which are from an academic paper. (5)
B.
from an academic paper
【单选题】I feel like _____ to bed. I’m tired.
【单选题】Decide which examples are from a conversation and which are from an academic paper. (6)
B.
from an academic paper