What is known about the influenza virus?

A． It was first found in a group of very old birds.

B． All the different strains can be found in wild birds.

C． It existed over 100 million years ago.

D． It can survive in many different places.

[单选题]H．ad I known about this computer program, a huge amount of time and energy .A．would have been savedB．had been savedC．will be savedD．was saved

[单选题]H．ad I known about this computer program, a huge amount of time and energy .A．would have been savedB．had been savedC．will be savedD．was saved

[单选题]B．Perhaps you have known a lot about the Internet．But what is it，do you know? The Inter-net is a network． It uses the telephone to join millions of computers together around the world．Maybe that doesn't sound very interesting． But when you're joine

[单选题]What is the message about?A． A meeting.B． A visit to FranceC． The date for a trip.

[单选题]What is the message about?A． A meetingB． A visit to FranceC． The date for a trip.

[单选题]What is the message about?A． a meetingB． a visit to FranceC． the data for a trip

[单选题]What is the message about?A．A meetingB．A vist to France.C．The date for a trip.

[单选题]What is the text mainly about?A． The research into war history.B． The finding of a forgotten hero.C． The pilots of the two world wars.D．The importance of military studies.

[单选题]What is special about the battery?A． It is built in an iPhone.B． It is the smallest of its kind.C． It can also be used as a charger.D． It keeps power for about 30 days.

[单选题]What is the text mainly about?A． Fish dieting and human dieting.B． Dieting and health.C． Human dieting.D． Fish dieting.