【推荐1】Dark clouds are a ________ of rain or snow.

A．signal

B．symbol

C．sign

D．sight

【推荐3】The practice of hanging clothes across the street is a common_____in many parts of the city.

A．look	B．sign
C．sight	D．appearance

【推荐1】He continued his writing until 1990 when a worsening eye condition ______ the end of his active career.

A．signed

B．signaled

C．considered

D．communicated

【推荐2】_____, the train started.

A．The signal given

B．Giving the signal

C．The signal being given

D．The signal giving

【推荐1】When the thief found the police had already _______ him, he ran _______ quickly.

A．attacked; out

B．spotted; out

C．spotted; away

D．attacked; away

【推荐2】Because the moon’s body blocks direct radio communication with a probe, China first had to put a satellite in orbit above the moon in a spot ________ it could send signals to the spacecraft and to Earth.

A．that

B．where

C．as

D．when

【推荐3】When the thief found the police had already him, he ran away quickly.

A．realized

B．known

C．spotted

D．stared

【推荐1】She was put under house arrest two years ago but remained a powerful      in last year's election.

A．symbol	B．portrait
C．identity	D．statue

【推荐2】We followed the ________ and arrived at Banyan Tree Phuket after a 2-hour ride.

A．signals

B．signs

C．symbols

D．symptoms

【推荐3】Her American friend still didn’t appear, but there was no _______ of anxiety on her face.

A．sign

B．signal

C．symbol

D．mark