Before the 9/11 attacks, terrorist attacks had hit many parts of the world.

In what sense are the 9/11 terrorist attacks a second Pearl Harbor? The 9/11 attacks and the Japanese air attack on Pearl Harbor were both __________ attacks on a __________ scale which should be considered as acts of __________ war.

Flu is an ___ that attacks the respiratory system.

中国大学MOOC: to _____ terrorist attacks

The 9/11 attacks and the Japanese air attack on Pearl Harbor were both surprise attacks on a massive scale which should be considered as acts of undeclared war.

h________：the act of tormenting by continued persistent attacks and criticism

Protestant gunmen made ______ in Northern Ireland since the bombing. A: only one attack outside Belfast B: two attacks C: quite a few attacks D: no attack in Belfast newspaper says

. After the recent bomb attacks, the public are being warned to be ______ at all times.

5. The reports of terror attacks in Paris were ________ across newspapers and websites.

The 9/11 Attacks were a series of four coordinated suicide attacks upon the United States in the New York City and the Washington D.C.areas in September of______. A: 2000 B: 2001 C: 1999 D: 1998