Which sentence could best be added after sentence 6? (6) These electric cars could help us to be less dependent on other nations for our energy. OA. Traditional, gasoline-consuming cars must be driven regularly to keep the battery charged. OB. Our neighbor to the north, Canada, is both an importer and an exporter of petroleum products. OC. Last but not least, plug-in hybrids emit less pollution and are better for our environment. OD. The technology for electric vehicles has actually been around for many, many decades.​

the

21 balloons is the story of professor william sherman's travels.

in 1883, he set off from san francisco for a balloon ride over the pacific and was found a month later floating with 21 balloons in the atlantic ocean. this seemed an astounding feat and everyone wanted to know what had happened.    

professor sherman was loyal, however, and said he would tell his tale first to the western american explorers club in san francisco, of which he was a member. this built up suspense for several chapters before he began to tell of the wonders of his adventures and the amazing island of krakatoa, an island which had just been blown up by a volcano.  

the residents of krakatoa are all millionaires who live under a "gourmet government" of their own devising. we get to see all the incredible adventures that creative people with unlimited resources would create according to the author.

whats it going to be about?

attitude toward the subject implied in a literary work.

serious at times, angry, impassioned, and optimistic, but most of all urgent