The forest fire caused by the volcano is difficult to be______.

A． put off

B． put on

C． put out

D． put up

[单选题]The newspaper didnot mention the [degree] of the damage caused by the fire.

[单选题]The newspaper didnot mention the [degree] of the damage caused by the fire.

[单选题]The newspaper didnot mention the [degree] of the damage caused by the fire.

[单选题]The newspaper didnot mention the [degree] of the damage caused by the fire.

[单选题]In the forest corresponding to the following binary tree，how many children does node B have？A． 1B．2C．3D．4

[单选题]F．ire dampers prevent the fire spreading through the process ofA．convectionB．conductionC．radiationD．direct contact

[单选题]The accident was caused by ______.A． the driver of the first carB． the driver of the second carC． the driver of the third carD． both B and C

[单选题]Why are the lions in the Git Forest especially vulnerable to disease?A．They are physically weaker than the African lions.B．They are small in size.C．They do not have enough to eat.D．They have descended from a dozen or so ancestors.

[单选题]The driver who caused the accident ______.A． drove very, very fastB． killed another driverC． killed himselfD． both A and C

[单选题]A．n error can be caused by attempting to divide by 0．A．InterruptB．DefaunC．UnderflowD．Overflow