1 At the early time, the railroad engineering influenced the highway design.

2 Railroad engineers built long tangents and flattened grades.

3 The design of a highway includes, as a rule, two main principles – safety and efficiency.

4 The design of a highway provides also the economy of construction and maintenance of a road.

Посмотри, как будто бы так:
Dear Ann,
 Out Explovers'Club has begun its work. Young explorers from different countries have come to the club. i have already made friends with some kids. i am attaching their photos.
 You can see David in the first photo. He is soeaking on his mobile phote. he often phones home to learn about his puppy's latest adventures.
 there are two girls in the second photo. Sue and indira are smiling. they are nice and friendly. in the evening, they  cook different dishes from their countries. yesterday, i tasted an indian one. it was spicy,but delicious!
  Look at Marko! he is playing football.he .plays very well. he is really good at football.
 Emily, from Great Britain,wants to become a journalist,in the photo, she is writing an article about out Explorers' Club.
  Now just look at the photos! Jessica is reading an English magazine for explorers and Andrew .is feeding a squirrel in the park.

Gorilla is the largest of all apes. Its height is around 1,75 metres and its weight is around 180 kg. Its body is covered with dark hair. Gorillas have a massive body structure with well-developed muscular system. Despite their threatening look they are quite peaceful creatures. They usually do not attack others, however, if needed they will stand up for their troop.

Gorillas live in groups. The leader of the group is the oldest adult male. Adult male is responsible for movement decisions, looking for a place to spend the night and organising daily routine of the troop. Gorillas are very caring parents to their offsprings.

Gorillas are herbivorous animals. Sometimes they can also feed on nuts and fruits. They rarely drink water, because plants contain sufficient amount of it.

Chest-beating is a well-known characteristic feature of gorillas. However, this is mostly used for threatening and rarely indicates that a gorilla is going to attack. The gesture symbolizes all the power and strength of this animal. Sometimes when a gorilla is really infuriated, it can bite.