A local wind which occurs during the daytime and is caused by the different rates of warming of land and water is a（）.

A line on a weather chart connecting places which have the same barometric pressure is called an（）.

A.isotherm
B.isallobar
C.isobar
D.isotope

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A feature of an inflatable raft which helps keep people stationary in rough weather is（）.

A.lashings on the floor of the raft for the passenger's feet
B.straps from the overhead
C.lifelines on the inside of the raft
D.ridges in the floor of the raft

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