Read It! The pit viper is a type of snake. A pit viper has a pit between each eye and nostril. These pits, called pit holes,
sense heat. This enables the snake to hunt in total darkness. The snake can sense a warm-blooded animal
nearby. The snake's brain receives the information from the pit holes. This information is converted into
knowledge the snake can use, such as the size and shape of the animal. A viper's pits let it sense small mammals
up to three feet (one meter) away. The snake can also tell if there is something nearby that would like to eat it.
Do It!
The pit holes
the snake.
А
direct
B
awaken
С
confuse
D
excite

according to the options stated, the one that is correct is the second option. the author most likely includes the panel to hint at the strong bonds among his family members. besides, the image from art spiegelman’s maus is common to show and portray the innocence and naivete of the children during the holocaust as well as the fact that millions of innocent jews were rounded up and taken by train to camps.

the present continuous is a verb tense which is mainly used to indicates that an action is in progress at the moment of speaking.  

it is formed using: person + verb to be (am/is/are) +verb + - ing form  

example: i am studying at this moment .

in addition, the present continuous is also used in order to express things that will or will not happen in the near future.

example: i am having dinner with some friends tonight.

the speaker sometimes   uses it   to express that an action is repeated and it causes irritation on the part of the speaker

example: my sister is constantly complaining about everything.